Sort of. Twice this week, after a diaper change but before the new diaper was put on, I've asked Xander if he wants to sit on the potty and both times he peed. After it happened today, I put a pair of Thomas underwear on him and told him Thomas didn't want to be peed or pooped on. I've heard of success stories with similar tactics. It didn't work with him. After he wet himself about a half hour later, I stripped him completely and let him run around outside with nothing on. Then he decided to try on his sister's new boots. What a photo opportunity:
(Last time I tried to put a nude or semi-nude picture of my child on their blog, it got removed, so this has, obviously, been edited).