During the summer months, I keep a "fun activity" box handy and I draw one fun activity for the offspring to do every day. Today's was "draw a self portrait and hang it on the fridge." Then I told them I would try to guess who's who. Well, they decided to--as Male Offspring #4 told me--"draw self portraits of each other." My fridge is now littered with several pics of pigs with blonde hair and pics of dogs with black hair. Amazingly, I guessed every offspring correctly.