Top Definition
When two people are in bed together and one person is on top and they're having such hard sex that the friction on the sheets at the moment of orgasm sets the bed on fire.

They were expecting a happy ending (orgasm) but instead got a happy ending with a negative twist (orgasm with the bed on fire)
The game was a Bed Burner since we won but our star player got injured and is out for the season.
by BarryLongshore November 04, 2009
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