Top definition
While having your anus eaten out by your partner, she reaches around and fingers you.
She loves getting the fishback done to her.
by cody bown? September 11, 2006
Happy St. Patties Day!
v, The act of bag tagging your boyfriend/spouse's balls in front of his father figure. This is usually followed by a lot of weird explanations and red faces.
Erin fishbacked Rob right in front of his catholic father. The poor bastard.
by bAc0Nb0Y January 25, 2004
Happy St. Patties Day!
A. The act of crapping your pants on the drive home from an expensive dinner.

B. not being able to make it home in time and crapping yourself, then going into a gas station to buy cigarettes with mud butt

C. To constantly smuckers everything you eat
" I almost made it up my driveway when suddenly I fishbacked right in the car"

Jesse: "it's gonna suck getting old, you can't help fishbacking all the time" Jeremy: " ya I know, I just started fishbacking after staying at payne's"

" I can't wait to get home and Fishback this cannoli"
by G.Traum May 04, 2013
Happy St. Patties Day!