This could be a TooMuchInformation post for some people. If you are one of those types of people, just scroll down quickly.
RMS- Here's a funny(I think) way of encouraging abdominal gas to move through quickly. Do it in the privacy of your room with no one around, first because you should do it pantless, second, because it often works, and you don't want your SO to be felled by a stink bomb. Rub your belly in a counter-clockwise motion (counter-clockwise if you were looking at your belly from another person's perspective, that is. Right side down, across bottom to left side, left side up, across top to right side.) Now squat, and crab walk across the room a couple of times, hanging onto furniture if needed. Repeat two or three times.