Speaking only for myself, I don't think there is a bigger turn-off than a man in briefs (well, other than a man in MY panties

). To me that reminds me of little boy underpants.
Boxers remind me of older men. Not exactly a turn-off, but something I'd imagine Grandpa would wear.
The sexiest thing in the whole world on a guy is boxer briefs. I had a boyfriend who wore these... his type went down the thighs somewhat and laced up the front... oh my!! I had to swoon every time I saw them. Don't know where he got them, though. You can bet hubby wears boxer briefs!
http://www.healthboards.com/ubb/t_up.gif