Top Definition
When something is really great or amazing it can be bum-age / the bum-age.
OMG that party was so the bum-age!!
by spider woman October 03, 2007

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Being up someones arse, but it being mutual. Normaly in the case of very close mates/friends.
have you seen them two? major bumage!!!
by Torz October 12, 2006

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