Ahh, the zoo. Where else can kids get a live lesson in primate lust.

These students received an eyeful on their field trip, and you can't help but laugh with them as the baboons do it in this YouTube clip posted Monday.

We soon hear a teacher-like "LET'S GO," and suddenly in our mind's eye, we're reluctantly dragging our lunch pails to the reptile house.

Did you know that female baboons scream louder when they're mounted by a higher-ranking male? Um, maybe those kids do now.