I do. When theres no one home and I just got out of the shower I like to fly in briefs. I do get a higher K/D ratio when I fly in my briefs; You have to understand the heat here sometimes.
Even Adolph Galland used to fly his 109 in underwear when he was in the Condor Legion in Spain. I read this somewhere.
Please restrain from making mental pictures while reading this thread.