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Football term for the goal. More specifically the net hanging off the goalposts. (soccer if you're american)
'The purchase Agogo dealt on his effort was frightening. He spanked it clean into the back of the onion bag. His goal was a proper hum-dinger and no mistake.'
by thee old boozerooney May 05, 2005
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1)Extremely large scrotum

2)Football goal netting
1) I've got a proper onion bag

2)I wish that stupid pundit would stop using the phrase "onion bag"
by Football Pundit March 12, 2009
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