It's another short notice one, and apart from the hassle of whipping up some sort of costume between now and the weekend, AIBU to think that to force 4-year-olds to choose between dressing up as a marauding murderer or a prissy pink fairytale female stereotype is just the thin end of the wedge?? They're only 5 FGS!
I think I won't tell DS, make some excuse and go to the park instead ...