Stick It

You have no clue what the jar's powder is, but you're sure it can't be any worse than just sitting waiting for your cock to shrink into oblivion. You remove the cork lid and quickly put your tiny dick in the jar. The pressure behind your inevitable load stops building, but it's just as strong as it was.

A slow grin spreads across the witch's face, accompanied by a slow menacing chortle.

"Risky move! Don't you wonder what's in that jar?"

Her calm demeanor sends your mind racing, knowing that you made the wrong choice. You are afraid to remove yourself from the jar, but even more afraid to keep it inside.

"I should be mad that you intercepted my spell, but I can't help but be amused by how much more you've intercepted your own means to stop me. The contents of that jar had a time slowing powder, which you have now localized to the leftovers of that tiny dick you possess. You'll be riding the edge for hours, maybe even days before you will finish! Since my spell is cast, I won't be able to finish until you do... unless you're out of my magic's range. The measly two inches you possess isn't worth my time. Luckily, you've helped me perfect my spell so now I don't need you really. So how should I punish you for this abrupt ending?"