1 definition by BLuFFaLo

Top Definition
Dead set basically means 100% serious, or not joking. it can be used as a question also. Commonly used by Australians.
1)
That guys a dead set fucken poof.

2)
Robert: Yesterday I totally flipped out and killed 100 pirates with my boner, and then wailed fucking HARD.

Some Idiot: Dead set!? WOW I AM PUMPED UP!!
by BLuFFaLo May 03, 2007

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