Maybe it's just me, but I cannot bear a pair of knickers which doesn't actually cover my arse AKA the dreaded g-string. Was reminded of this at the weekend when DH took me out for dinner to celebrate wedding anniversary. Wore slinky dress which necessitated pants that, quite frankly, barely cover anything. As we were walking along the street, I just wanted to keep hoiking them out from between my butt crack. Not great. Couldn't wait to get my big granny pants on the next day. I think in M and S parlance they are known as full brief.