Someone that looks like Tarzan and fights like Jane.
Someone who sets themselves up to be embarassed.
As in someone asking if another person if they they pulled their pants down back there, and to the Jabroni you say, no I pulled your wife's pants back down there, and then I went down there.
....or, someone saying to you "You and I have nothing in common" to which you respond to the Jabroni by saying "We both have something in common because we've both had sex with your wife".
One who talks the talk, but could never walk the walk.
One who talks shit and doesn't back it up, but rather ends up eating their shit in return.
A fuckin 'tard.
Bob: "oh yeah, well..(breaks Bill's face in half)...who's the fuckin' pussy now you fuckin Jabroni?!"
Damn Jabroni's, I'm always breaking my foot off in their asses!