can of piss

Dublin northside saying.
Used to describe a useless person because what good is a "can of piss" to anybody.

you can expand this further by saying: you're some can of monkey piss, donkey piss or even whale piss.

Patch: I dropped your phone in the sink!!
Kevin: You're some can of piss, i tells ya.

by Caoimhin mac Shuille October 17, 2007