I have a code word that I use when I talk about wearing diapers. For example, my wife was at the neighbors house on the patio having some drinks. I just finished a bunch of work and a shower. I went to the neighbors house, sat down, started casual conversarion and slipped in. "It feels good to be done. I'm ready to 'indulge' for the night. It's been a while."
Let's hear some code words and clever times you've slipped them in with people who don't know. It's a neat little rush.