Justin Timberlake was forced to feed a drag queen dressed as his ex-girlfriend Britney Spears to earn his Hasty Pudding Man of the Year Award at America's Harvard University on Friday.

The SexyBack singer was roasted by members of the Massachusetts institution's amateur theatre group before he was allowed to take home his Hasty Pudding prize at the wacky annual ceremony.

Timberlake was brought on-stage and made to wear a curly blond wig before he was handed ice cream to spoon out to a man parading around in a school uniform as Spears - while his current girlfriend, actress Jessica Biel, giggled in the audience.

He later stepped into pink high heels and a bra as the cross-dressing troupe presented him with the golden statuette.

Timberlake likened the ceremony to his time on U.S. sketch show Saturday Night Live, telling the audience, "Funny enough, every time I've hosted SNL I've ended up in drag at least once. I love stuff like this."