Established J2 relationship, can be AU or not. Jensen gets greedy and casts a spell to make a certain part of Jared's anatomy even bigger. The spell backfires and suddenly all of Jared is exponentially bigger--giant sized. The spell will right itself in 48 hours. But Jared is horny and Jensen must find a way to get him off.

Definitely NC-17 on this one, will Jensen need help?, an additional cast member or friend--it's up to you!