Top Definition
In poker, the second best flush possible given the situation.
I had the king high butt-flush, but he had the nuts.
by benofmn June 28, 2013
1. A next morning, hungover dump.
Tripp: "You ready? The party starts in 10 minutes"

Owen: "Dude, I'm still recovering from the butt flush I had this morning"
by GastoniaClamSlammer1 April 27, 2013
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