Yeah, I know, which is why I thought about it and dropped the idea in favour of the spiders/glitter/product of the gift shop of the Museum of Sex. Theoretically I might almost justify a mousetrap in a particularly tempting purse- "I was afraid of pickpockets"- but I would be carrying a tote bag rather than a purse. And the mousetrap ought to be reserved for if Mayor Bloomberg himself searches my bag, since he's the one who thinks the policy is so great, whereas the cops are just doing their jobs.