Baltimore Bidet

The act of a male using his urine in an upwards stream to clean the undercarriage of another person who is squatting over them.

After a long hot day of walking around the Inner Harbor, Ross discovered his ass crack had become excessively lathered in smelly bum butter. Upon hearing of the situation, ever helpful Jim volunteered to accompany Ross back to the hotel and give him a Baltimore Bidet.
"Ross, I've got a belly full of 'Natty Boh' and have enough pent-up piss to easily flush all the jizz infused dung-discharge from your ass crack!"