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2.
To disadvantage yourself.
Taken from when you accidentally score against your own team in sports, but can be used in a general sense.
A: I just lost my wallet
B: way to score on yourself
etc.
by assfacemcgee November 03, 2005

Words related to score on yourself

disadvantage hurt score suck yourself
 
1.
1.To score a point against your own team in a sport; to shoot into your own goal.
2. To give yourself a disadvantage in a game.
I just scored on myself to lose the game.
by 5'1"Racer June 05, 2005