C.A.
After talking with a friend about her own guys fear of poohing I tried this:
I made a big elaborate story about how the poop goes down with Mommies poop and Daddies poop and they all get together to have a pooh party. And how his poop was said because it missed Mommies poop and wanted to go to the party. "Didn't he want his poop to go to the party?" I thought it was pretty funny when she told me and I fealt pretty funny telling my ds. But after telling him that a couple of times and the antisipation of a big special present that he can pick out we had it licked in a week.
Best of Luck!