One lovely day, mother was taking her daughter to a ZOO... (only for people with good stomach)

... while walking trough the Zoo, little girl saw some chimps in the cages having sex. The curious little girl asked her mother what were they doing. "Ahh..." she murmured. "They are making cakes, my dear." Later that day, little girl, together with her mother and father was enjoying some family TV time. Suddenly a
un-censored sex scene emerged on the TV screen. "What are they doing dad?" little girl asked. "They are making cakes my dear." Father replied. Next morning while having breakfast all together, little curious girl asked her parents a uncomfortable question indeed. "Have you've been making cakes last night, mom?" Confused mother answered "yes my dear, we have... How do you know?" "Well... I've licked all the cream that was left"