A nice trip to the zoo with the whole family - and suddenly you see yourself confronted with all these funny questions. "What are they doing, Daddy?" "Why is this hippo on the other hippos back, Mommy?"
If you're not prepared to have the talk yet, you might wanna go for "He is giving his friend a nice back massage." or "The hippo needs help to get to the surface."
But this might also be the right moment to start telling your kids about the birds and bees ...
