Just a bet?

"If you finish your work, you can do whatever the hell you want!" Big mistake Slughorn. Voldemort and Quirrell were the one's who get the repercussions of Slug's mistake, when the girls of the class try and get the brother-from-another-mother's in the most embarrassing way. But is it just a bet for the two boys,or will it turn into something more? One-shot Quirrellmort.