Taking the piss [out of someone/something] Share definition Flag Making fun of someone or something, or kidding with someone about something. You really won the lottery? Naw, I'm just taking the piss. Taking the piss [out of someone/something] by Mike October 3, 2003 0 0 Get merch Get the Taking the piss [out of someone/something] mug. Buy Now — $32.95 See more merch