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1.
Pronounced "hab jay," HABJ is an acronym for "half-assed blow job."

A HABJ is the unfortunate event that occurs when a blow job is not performed to "completion."
Michael was so disappointed that all he got was a HABJ for his 3 year anniversary.
by SMB1234 September 26, 2011
 
2.
an acronym for: horny ass bastard jew, typically used to describe someone that just can't keep it in their pants.
Damn dude, Rijo is the biggest HABJ I've ever met.
by bonerventure218 August 11, 2011