Who knew laughing was contagious?

I believe so as well. Speaking of which, I was once waiting at the dentist, and there was a guy sitting across from me. When I yawned, literally a second or two after I did so, he yawned as well. Was interesting to see that contagious effect of me yawning, heh.

Want another laugh?

Imagine the gorilla saying "huehuehuehuehuehuehue" running away

That gorilla probably said "You like picking up trash huh big shots!? Now pick this up, Bitch!!!!!"