When someone who comes from an impoverished background shows-off with (often tasteless) flashy jewelry, expensive phones, etc. to demonstrate that they are not as broke as their friends
; they're "in the big leagues" because they are not living-off welfare
, etc. Pretending to be rich on a small budget.
We were in this dump of a club last night, all these thousandaires were showing-off their new cellphones and lame-ass gold chains.