GSA Administrator Martha Johnson stepped down in the wake of the scandal. (Harry Hamburg/Associated Press)

The agency, already smarting from a scandal over a lavish conference in Las Vegas, has a new reason to cringe: GSA employees made up bogus prizes, including a “Jackass Award,” in order to justify taxpayer-funded dinners, Roll Call is reporting.

An employee told the agency’s inspector general that supervisors would invent reasons to honor employees at conferences so they could serve dinner. The “Jackass Award” was given at one conference to an employee “for doing something stupid,” the employee said, according to a transcript of the interview with the IG that Roll Call obtained.

The fake awards follow on the heels of all kinds of embarrassing revelations about the GSA’s conferences. The Las Vegas confab that drew criticism featured a clown and a “mentalist,” and another GSA event — also held in Sin City — included a motivational speech by the man who inspired the football flick “Rudy.”

If the GSA is giving out awards for employees “doing something stupid,” it probably has a lot of candidates from which to choose.