fire one off

To fire one off is to take a crap.

I hadn't crapped for a month, until I couldn't hold it in any longer and I then just fired one off.

by OliverS May 7, 2005

fire one off the cuff

To masturbate (male)

My bitch wasn't around and I was hornier than a dog with two dicks, so I quickly fired one off the cuff before she came home.

by Absintheminded April 9, 2004