My first AIBU post but felt I had to share my accidental discovery!
I am at my bf's place and realised on getting ready this morning that I had forgotten to bring any clean underwear with me. I didn't want to go commando as am wearing jeans (ouch the chaffe) so he suggested I wear a pair of his.
I scoffed at this but then realised i don't really have any alternative other than to put dirty undies back on (euw) so I put a pair of his close fitting trunks on and on my lord, they are so comfy!
They don't look attractive in the slightest but they come up to my belly button and I haven't had a single need to retrieve wandering fabric from anywhere it shouldn't be. It's a revelation and I'm not sure I'll ever go back...