With your Protestant upbringing, was the sexual revolution somewhat of a shock to you? When I was in America in the ‘60s there were all those books about sex, about how to do it. So I made fun of it. I made a book that was the Kama Sutra with frogs. I put them in every possible situation and position, believe me! I used frogs because I always thought that frogs have beautiful legs. My mother loved practical jokes and you know what she did one day? She sent me to the grocery shop and sent me over to the lady who worked there to ask if she had frog legs. She thought I was talking about her and she nearly slapped me! I came home crying. (http://www.huffingtonpost.com/2015/04/06/tomi-ungerer_n_7000594.html)