Top definition
a bag used to hold piss/urine, which is connected to the vangine/penis part where the wee comes out. Can be disposable or not, and is often used in hospitals.
"Hey can i get a catheter bag in here?" "oi cassie get in here!!!!"

or

"hey did u see cassies face the other day?" "yeh it looked kinda like a catheter bag...ewww"
by bonbon08 August 10, 2009
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