Figured this the best place to post something like this...
There's a company in Germany that makes (or made) a product that is called a "dissolvable bikini". The bikini is made out of material that dissolves in water, so that basically the woman is left nude if she stays in the water long enough.
To quote, "sellers in Germany bill the dissolving Get Naked costume as a chance for men to get their own back after a break-up."
It'd be a mean stunt to pull, though!