I never tried it but I saw people having fun in a movie with animal crackers on the body..
one was basically acting like a reporter and the animals were wild and moving them around and making comments and stuff.. Climbing "Mountains" (MT were the boobs BTW) and going to the belly button water hole.. He would basically move them all over the body very lightly and just enjoy it..
-If there is hair it could be a wild forest.. where the giraffes eat
-If the person is ticklish when moving over a certain spot you could say its an earthquake and that the animals scatter..
-the vagina could be where the bear hibernates in the winter
-the penis could be a ... maybe an ancient tree favorite of the elephants?
-the rhino likes the open plains of the stomach
-you could have the animals mate to show when your both ready to get down to business
-you could make one of the boobs be a volcano and jiggle it and make all the animals run in fear...
I dunno you could try something like this I guess.. and just see where it takes you... Maybe there is a different kind of food that's shaped like other things and could do something similar
As for other stuff I'm not really sure except for like the usual stuff people use like whipped cream and chocolate syrup