Before you get to TSA change your brief. If it contains one void or some bowel release they will stop you and you' may have to remove it or at least show it. Do a bowel routine before trip also. Other than that the worse part is the standing bathroom clean up and change. Seni briefs are easy to put on standing and are silent under clothing. At the very worst you could need one change in flight or torwards end. There's no recepticle to place the trash - one has to bring it back to one's seat.