bultero
A person who puts on a show to appear more important or wealthier than they are, or someone who talks big but always flakes on their plans (in the Dominican Republic, the term refers to someone making a bulto, which is a bluff or a front).
-There goes Pedrito acting like a bultero with a borrowed car. -Juan says: hey, let's have a cool hangout on Saturday; Hector replies: what for, so you can flake out, you bultero?
Automatically translated from Spanish
República Dominicana