I just saw a post that mentioned it and i also do this all the time. I find that i do not remember kissing the belly of my grown boys, but i do kiss the bellies of my girl all the time, specially the pregnant ones.... and the puppies do get kissed all over including the favorite belly !!!
I love them and i just do it, but since i saw the other post i am wondering how many more "crazy kissers" are out there !!!