A jabroni talks smack but has no way of backing up his mouth.
A jabroni lets his mouth say stupid things when it shouldn't.
As if to say, "Who are YOU to interrupt me?"
2. a poser, one without an identity.
3. fodder for the ring. see 'dead meat'
2. stop acting like a jabroni, you'll get your ass kicked.
3. who's the jabroni?