play massively under-rolled when you're playing a complete moron Heads-Up? This guy was playing terribly and kept going on about how he was a pro (this is a 1/2 6-max game btw) and after I spanked him for about 20bbs in very few hands he challenged me to play a HU 4/8 game.
My roll was about $1000 so I thought, give it a few hands to make sure he hasnt suddenly started playing really well then go for it.
To cut a long story short, after 30mins heads up my BR is now $1,300...