DeMarcus Ware gave playing with the Cowboys a whole new meaning Sunday ... the ex-Dallas star got a lap dance from a shirtless dude in rodeo gear -- and the vid is hilarious!!
The future NFL Hall of Famer took in the "Dancing With The Stars: LIVE!" show in Grand Prairie, Texas ... and, at one point during the event, he was invited on stage for a special performance.
FYI, Ware was on Season 27 of the "DWTS" show -- famously dancing with pro Lindsey Arnold -- and she was the one that pulled him up from the crowd.