Marriage Boot Camp Exclusive Preview: Watch Heidi And Spencer Really Suck At This Obstacle Course

On this week's Marriage Boot Camp: Reality Stars, the couples do an exercise designed to improve their communication with each other, in which one person drives around an obstacle course blind-folded and the other person directs the driver. The catch? The losing pair has to serve lunch to the rest of the couples!

OK! Exclusive: Heidi Montag Reveals She Wants As Many Kids As The Duggars

When it's Heidi Montag and Spencer Pratt's turn to get behind the wheel, they have zero intention of serving anyone, and all intentions of winning. However, that plan backfires just a little bit when Heidi drives literally off the course, and Spencer can't stop laughing! And leave it to Aviva Drescher to call them out for being immature...

Watch the exclusive clip above to see how the Pratts did on the course, and tune into Marriage Boot Camp: Reality Stars Friday, Feb. 6 at 9pm on WE TV to see if they end up serving everyone else in the house their lunch.

WATCH: Heidi Montag Finds Out If Spencer Ever Wants Kids

Do you think Heidi and Spencer will win this challenge? Tweet us @OKMagazine.