Same here.... I was playing a guy who had me down 45-0 at half. I refuse to quit no matter what, it was even my motto on XBox live for a while.
Anyway...
This guy offers mercy I refuse and he sends me a nasty message. I respond back and tell him I don't quit check my motto! He sends me another nasty message and I respond are you gonna play or talk crap?
He responds back and says OK you asked for it!!!!
Long story short I scored 57 unanswered points and he quit the game with a few minutes left in the 4th qtr.