anyway.....only in the summertime when it's unbearably hot. But when i lived with my ex I did alot. I love sleeping nekkid with a woman........snaking your morning wood in between her legs to wake her up is also nice.....;-)
if i got a major hard on in the middle of the night while dreaming, i'd wake up less sore in the morning, because my underwear/boxers wouldnt have been restricting it.