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If you're wearing pants or a skirt with a tight waistband, your clothes could be making matters worse by putting pressure on your bladder. Make yourself as comfortable as possible by loosening your tight clothing.  If you're wearing a belt, unbuckle it. Unbutton or unzip your pants or skirt. To hide the fact that you're unbuttoned, pull your shirt down or place a sweater or another item over your lap. For similar reasons, you may also find it helpful to uncross your legs, particularly when sitting. Squirming around jostles your bladder and creates an urge that feels more extreme. You might want feel like tapping your feet or shifting from side to side, but that's just going to make matters worse. Try to get in a comfortable position and stay that way. This is one of the best ways to deal with having to pee on a bus. If there's really nowhere to go to the bathroom for the next hour or two, make the best of the situation by trying to forget about your uncomfortable physical state. Pick up your reading material or turn on a video absorbing enough to keep your mind off of your urge to relieve your bladder. Both of these actions can cause the pelvic floor muscles to give a little, making the urge to pee worse. You probably can't do much about it if you have a coughing fit, but you can make sure the book or video you choose isn't funny enough to make you laugh so hard you pee in your pants. Having an unbearable urge to pee is partly psychological, so thinking about whitewater rafting and spouting geysers really will make you feel worse! Let your mind dwell on deserts (without mirages) and other things that are dry. If you have a mean friend who thinks it's funny to sing "Don't Go Chasing Waterfalls" while you're trying to hold it in, tell him it won't be so funny if you pee in your seat right next to them. There's no chance that you're going to burst your bladder just by holding your pee for a long time, so let your mind be eased. If it gets to the point where your body can't hold it anymore, it will simply stop doing so. Hopefully by then you'll have gotten to a rest stop! If you fear the time has come and you're still sitting there wedged between a stranger and a window, read on.
Loosen tight clothing. Try not to move around too much. Read or watch something to distract yourself. Avoid coughing or laughing. Don't think about running water. Know that holding it for a long time won't hurt your bladder.