This post deserves a link, because it's so damn good.
(For my non-medical readers, a Foley catheter is a tube that drains the urinary bladder through the urethra. It usually empties into a bag that enables doctors and nurses to measure exactly how much urine a patient is producing. This is important for assessing a patient's kidney function. Inserting the catheter through the patient's penis is said to be quite painful.)
btw...
GO RED SOX!!!!!