stating the obvious

(As told by Sarah)

Last night it snowed. (!)
we're all in Simon's bedroom saying goodnight.

Jay is looking out the window, trying, as always, to get Simon to laugh.

Jay: "I see a snowy car!"
Simon:
Jay: "I see a snowy elbow!"
Simon:
Jay [going for the cheap laugh]: "I see a snowy butt!"
Simon starts giggling hysterically and can't stop for like 5 minutes.

Me [rolling my eyes]: "why are butts so funny, anyway?"
Simon: "because they're stinky."