Meaning
One who shows off — a person given to flashy, look-at-me display, flaunting their clothes, money, car, or new things to impress and outshine others. As a verb, to 'show off' is to flaunt and boast. Close to 'boasty', it can be a light tease or a real criticism of someone too fond of parading what they have.
Examples
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Him a show-off wid him new car.
He's showing off with his new car.
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Stop show off an siddung.
Stop showing off and sit down.
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She a real show-off inna har fancy garms.
She's a real show-off in her fancy clothes.
Origin
From 'show off'; one who flaunts/boasts. See [[boasty]], [[stush]].
How it’s used
One who flaunts/shows off; also to 'show off' = flaunt. See [[boasty]], [[stush]].