Parents were shocked when gorillas at the zoo gave their kids a lesson in the birds and the bees.

The gorillas, who got dirty with one another, were completely unphased by their human audience, or the little gorilla who closely watched the action from behind the large silverback.

“I don’t know if you knew it, but this is how babies are made,” one woman can be heard telling a child. Keep reading to learn more about this hilarious incident at the zoo!

If you put a male and a female animal together, it’s very likely that they’ll have some fun.

If you put a male and a female animal together in a zoo enclosure, it’s very likely they’ll have an audience while having that fun.

That’s what happened when a group of people were watching a large silverback, who was flirting with a much smaller female gorilla.

“Poquito [little]” says one person about the female.

Giving into his advances after a quick circle around a supporting beam, the male then mounted her from behind.

“Okay, no, no, no! I’ve seen too much,” says a child, who quickly became aware of what was going down beyond the glass.

“Are they having sex?” Asks another. “Oh my God, I’ve never seen something like this with animals in real life.”

Seconds after the great ape starts gyrating his huge hips, a curious young gorilla first watches from a distance and then moves in for a closer inspection