New Kids on the Block hottie Joey McIntyre and Backstreet Boys bad boy A.J. McLean gave their screaming fans what they wanted on the final stop of the NKOTBSB tour in London, Ontario this past weekend.

McLean strutted out on the stage in a black top hat, a white sleeveless shirt and a pair of tighty-whities during Donnie Wahlberg's performance of 'Cover Girl.'

Later in the show, McIntyre showed off his wild side (and cute caboose) while crooning 'Quit Playin' Games (With My Heart)' in a blue crop top and black boxer briefs, taking Backstreet Boys Brian Littrell and Nick Carter by surprise.

Check out the fan videos below to see the still-hot boy banders drop trou:

[via PopCrush]