Me and my g/f tought about that on a recent vacation trip, and we both went to scope out the bathroom individually about 2 minutes apart, and we concluded that its next to impossible!! We're both giants compared to those tiny tiney bathrooms I'm 6'2", she's 5'8", its not happening. So we took care of it as soon as we got to the hotel, but lots of fingering/fonding on the tour guide bus to the hotel....lol