How are Cowboys backup offensive linemen celebrating their big win over the Eagles???
SHIRTLESS UNDIES DANCING, BABY!!!
Dallas beat the hell out of Philadelphia in an absolute must-win game Sunday night ... and for the party Monday, their backup center Joe Looney got graphic.
The big fella -- measuring in at 6'3", 315 pounds -- stripped off his shirt AND his pants ... and gave us all a pose-off and a jig that were truly epic.
Looney's known as the team's class clown ... and his victory Monday vid definitely didn't do a damn thing to dispute that!