I've discovered this boorubux thing and I've bought an item called "Piss"

What user should I piss on with the item?

Speaking of piss, did you know Ancient Romans used urine to clean their teeth? Human urine was historically used as a mouthwash and teeth whitener in ancient times, particularly in Ancient Rome, due to its ammonia content. When urine sits and ages, urea breaks down into ammonia, ammonia acts as a powerful cleaning and bleaching agent, which helped remove stains and whiten teeth.