Here are few findings.1 they dont have noses.

https://abs.twimg.com/emoji/v2/... draggable="false" alt="😀" title="Grinning face" aria-label="Emoji: Grinning face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😬" title="Grimacing face" aria-label="Emoji: Grimacing face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😁" title="Grinning face with smiling eyes" aria-label="Emoji: Grinning face with smiling eyes">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😂" title="Face with tears of joy" aria-label="Emoji: Face with tears of joy">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😃" title="Smiling face with open mouth" aria-label="Emoji: Smiling face with open mouth">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😄" title="Smiling face with open mouth and smiling eyes" aria-label="Emoji: Smiling face with open mouth and smiling eyes">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😅" title="Smiling face with open mouth and cold sweat" aria-label="Emoji: Smiling face with open mouth and cold sweat">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😆" title="Smiling face with open mouth and tightly-closed eyes" aria-label="Emoji: Smiling face with open mouth and tightly-closed eyes">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😇" title="Smiling face with halo" aria-label="Emoji: Smiling face with halo">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😉" title="Winking face" aria-label="Emoji: Winking face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😊" title="Smiling face with smiling eyes" aria-label="Emoji: Smiling face with smiling eyes">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🙂" title="Slightly smiling face" aria-label="Emoji: Slightly smiling face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🙃" title="Upside-down face" aria-label="Emoji: Upside-down face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="☺" title="Smiling face" aria-label="Emoji: Smiling face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😋" title="Face savouring food" aria-label="Emoji: Face savouring food">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😌" title="Relieved face" aria-label="Emoji: Relieved face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😍" title="Smiling face with heart-shaped eyes" aria-label="Emoji: Smiling face with heart-shaped eyes">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😘" title="Face throwing a kiss" aria-label="Emoji: Face throwing a kiss">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😗" title="Kissing face" aria-label="Emoji: Kissing face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😙" title="Kissing face with smiling eyes" aria-label="Emoji: Kissing face with smiling eyes">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😚" title="Kissing face with closed eyes" aria-label="Emoji: Kissing face with closed eyes">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😜" title="Winking face with tongue" aria-label="Emoji: Winking face with tongue">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😝" title="Squinting face with tongue" aria-label="Emoji: Squinting face with tongue">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😛" title="Face with tongue" aria-label="Emoji: Face with tongue">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🤑" title="Money-mouth face" aria-label="Emoji: Money-mouth face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🤗" title="Hugging face" aria-label="Emoji: Hugging face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😏" title="Smirking face" aria-label="Emoji: Smirking face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😶" title="Face without mouth" aria-label="Emoji: Face without mouth">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😐" title="Neutral face" aria-label="Emoji: Neutral face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😑" title="Expressionless face" aria-label="Emoji: Expressionless face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😒" title="Unamused face" aria-label="Emoji: Unamused face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🙄" title="Face with rolling eyes" aria-label="Emoji: Face with rolling eyes">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🤔" title="Thinking face" aria-label="Emoji: Thinking face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😕" title="Confused face" aria-label="Emoji: Confused face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😔" title="Pensive face" aria-label="Emoji: Pensive face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😡" title="Pouting face" aria-label="Emoji: Pouting face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😠" title="Angry face" aria-label="Emoji: Angry face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😟" title="Worried face" aria-label="Emoji: Worried face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😞" title="Disappointed face" aria-label="Emoji: Disappointed face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😳" title="Flushed face" aria-label="Emoji: Flushed face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🙁" title="Slightly frowning face" aria-label="Emoji: Slightly frowning face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😱" title="Face screaming in fear" aria-label="Emoji: Face screaming in fear">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😣" title="Persevering face" aria-label="Emoji: Persevering face">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😰" title="Face with open mouth and cold sweat" aria-label="Emoji: Face with open mouth and cold sweat">https://abs.twimg.com/emoji/v2/... draggable="false" alt="😫" title="Tired face" aria-label="Emoji: Tired face">

They dont have ears too

They dont have hair too

They are all twins

They all have jaundice

If you have read this thread do far you have a lot of time...go back to your studies