Decide against making a move

You pause for a moment, deciding that this is simply too risky an endeavour. Sticking your dick through a hole, to be used by whoever lies behind that for whatever they want to, is just simply way too risky. Who knows if they'll just slice it off with a pair of shears? Not worth the risk, especially in this school, where blowjob's are easier to get than any sort of an education.

Carefully, you slip out of the stall, missing out on the opportunity and heading off to your classes.