A woman takes her young daughter to the zoo. They walk up to the monkeys and the little girl notices two of them mating. The little girl curiously asks her mom what they're doing. The mom hesitantly says, "um, well, they're baking cake."
"Oh, ok." the little girl says.
They later walk over to where the lions are. The little girl notices one of the lions on top of another, and again she asks her mom what they're doing. The mom says more confidently this time, "well, they're baking a cake too sweety."
The next morning the little girl wakes up and walks out to the kitchen where her mom is cooking breakfast. The little girl asks, "Mommy, were you and daddy baking a cake on the couch last night?"
Extremely embarrassed and nervous, the mom replies, "uh, yeah sweety. we were."
The little girls says, "I know, cause I licked up some of the left over frosting."