To get caught up in or by something unexpectedly with negative results. Based on the hook used to drag a large fish onto a boat.
by nexusix February 2, 2009
 Get the Gaffmug.
Get the Gaffmug. by AuntHilda July 2, 2017
 Get the Gaffmug.
Get the Gaffmug. by theoneandonlyturtleking September 10, 2023
 Get the Gaffmug.
Get the Gaffmug. Mark - His name on the register is William, so why does he gets called Bill?
Charlie - Cos Bill is short for William!
Mark - Aww no, I just done a Gaff!
Charlie - Cos Bill is short for William!
Mark - Aww no, I just done a Gaff!
by The Coltness Killa October 16, 2009
 Get the Gaffmug.
Get the Gaffmug. Someone who sits in the background and laughs at everything that everyone says in a group conversation without contributing to anything that anyone says but giggling and smirking like a nonce.
Brian: Oi Mike, D'you mind if I bring Adam to on Friday?...
Mike: If you want but he's just a gaff. Doesn't say anything...
Mike: If you want but he's just a gaff. Doesn't say anything...
by Yorkshire pudding December 13, 2017
 Get the Gaffmug.
Get the Gaffmug. 