Please excuse me if this question is a bit gross but since me and my mommy are planning a play-date, she wants me to mess my diaper for her. What would the best way to guarantee. I've never tried suppositories/laxatives and to be honest I'm a little scared to and I don't want to huge, uncontrollable mess, just a regular poop. Anything I could use. Food? Laxatives? Suppositories? Once again, sorry if its a bit gross but I'm new at this and need advice.