A day often on a weekend or during time away from work or school where you drink so much that the day seems shorter than usual
Tom: "Bro did you finish that assignment for English yesterday?"
Bill: "Nah my dude I totally had a 23 hour day yesterday I was way too fucked up to do homework"
by MissouriMcFlurry September 24, 2017
Get the 23 hour day mug.