See Wild Goose Chase.
My friend sent me on a wild goose chase trying to figure out what it meant.
A poker hand containing 2 cards of one rank, and 3 cards of another rank, all of the same suit.
Josh: Alright, what did you get?
All: *reveals cards*
Rekka: Flush House. I win.
Josh: Rekka wtf?
Mary: What are you trying to pull?