When someone has done something highly embarassing, but it is equally as hilarious. Has its origins in the British tv show, "I'm Alan Partridge".
A: Hey, John just ran into that big pole over there!
B: You've gotta laugh when you fall off your sofa!
B: You've gotta laugh when you fall off your sofa!
by cubey4000_the next generation November 19, 2006
Get the You've gotta laugh when you fall off your sofamug.