What is Show-off?
1.
Someone who boasts about themselves
''that guy is a right show-off you know!''
See
2.
A wannabe loser who is so desperate to fit in and is soo ugly, that you go total Texas Chainsaw Massacre on. He does things that make him look "cool" (when he really looks like an asshole) to impress everybody and show of his "talents" (which he doesn't have). Gets made fun of A LOT, mostly by nerds, losers, sensitive wusses and science geeks. See Anthony Brito
Regina: Yo, Anthony Beito is such a fugly asshole.
Liana: I know, what a pathetic show-off
See