Unsportsmanlike Conduct

noun a slang term used to describe an action or behavior that is rude, inconsiderate, or unfair

• His decision to sabotage the project at the last minute was a truly dick move.
• I can't believe he pulled that dick move on you like that.
• What a total dick move, dude.
• Her betrayal felt like a dagger in the heart, a real dick move.

noun a swimming pool that is not clean or has impurities

adjective describing something as unclean or dishonest

• The maintenance staff was called to clean the dirty pool at the hotel.
• Hey, let's go for a swim in that dirty pool over there.
• I wouldn't dip my toe in that dirty pool if I were you.
• It's like jumping into a dirty pool when you get involved in that gossip.