Ask and ye shall receive.
Wanna take your own "bum wad" ??? Remove the paper core from the roll and flatten. This tip courtesy of every kid who ever bummed around Europe. Forget "Got Milk?". The mantra was, "Got Bum Wad?"
Parents would painstakingly remove paper cores and send to American Express outposts. Along with money, of course.
Also, NEVER go ashore without at least one little pocket pack of tissues.