Go to a public indoor swimming pool and undress in one of the changing rooms. Lock your clothes into a locker or leave them at an appropriate location. Leave behind some swimming clothes in the changing rooms you have just undressed in and leave naked toward the shower room. Soap yourself and take a normal shower. Choose easy, medium or hard difficulty for the time you have to spend there before returning to your changing room.

Easy: Take a quick shower of at least 5 minutes. [15 NIP-Points]

Medium: Take a shower of at least 15 minutes.  [30 NIP-Points]

Hard: Take a long shower of at least 30 minutes. [45 NIP-Points]

Check by returning if your swimming clothes still remain in their place. If not you can either decide on giving up on them or going to the Lost & Found section. But dress up before leaving because you still have your streetwear locked in an accessable locker.