Originally Posted by Bride of a Bull

Any man who had had a catheter inserted would wince harder with the memory. Count another here.

A Foley catheter is a thin, sterile tube inserted into your bladder to drain urine. Because it can be left in place in the bladder for a period of time, it is also called an indwelling catheter. It is held in place with a balloon at the end, which is filled with sterile water to hold it in place. - http://www.emedicinehealth.com/articles/11633-1.asp

WARNING! Do NOT PULL OUT when balloon is filled!