"does he drink with his-" yes he drinks with his forehead
his mouth is only for talking his like, throat/esophagus/whatever he has is attached to his proboscis on his forehead
"where& #39;s his brain" he doesnt fucking have one genius
just kidding its like how a woodpecker& #39;s tounge wraps all the way around its skull its just like that maybe it goes down the back of his head and actually attaches to the back of where you& #39;d think his throat was anyway maybe he CAN eat with his mouth
its also possible it just goes straight through his sinuses who cares