The other day my kid asked me some questions about the human body, and with my intelligence, I decided to let him know...

"Why have we got ears?"
"So that our glasses have something to rest on"

"Why do we have eyes?"
"Because otherwise our eyelids wouldn't protect anything".

"Why do we fingers?"
"well, fingernails need to grow off something!"

"Why do we have noses?"
"Because if we didn't, we'd look like Voldemort"

"why do we have *******"
"So that we can make a face with our stomachs"