Those who aquire quick money are impatient to flaunt their wealth and material possessions.

Waste : use or expend carelessly, extravagantly, or to no purpose.
Squander : waste (something, especially money or time) in a reckless and foolish manner.
Hide : put or keep out of sight.
Ostentatious : characterized by pretentious or showy display; designed to impress.
Flaunt : display (something) ostentatiously, especially in order to provoke envy or admiration or to show defiance.

Synonym of Flaunt is Ostentatious