I think, to express it with all moderation, that that 'dropping her knickers' was an unfortunate -- well, I would like to say "lapse" on Jim's part; but in fact too unhappily typically tasteless an ill-natured vulgarity. Can Jim not have any relationship of friendship & mutual respect with a member of the opposite sex without the 'dropping of knickers' being a factor? Well, then much as he might detest the very thought of the late Lady Thatcher, he has no need to be so gratuitously offensive.

≈M≈