Top Definition
a day that sucks continuously.

Like a Dyson vacuum, it never loses suction.
I woke up late, had a flat, the cat threw up on me, I lost my change in the vending machine, the boss bitched me out, got stuck in traffic on the way home, my girlfriend broke up with me and took the X-box, the computer crashed and I'm out of vodka. Today was a "Dyson day".
by KimmehG August 24, 2006

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