Since you specifically reached out to me to help your punishment, I'll allow myself the liberty of being quite cruel. Do as follow:
1. Let's begin by having you drink 2 cups of water.
2. Now make your balls very sore: hit them with a hard object (can be a spoon, a ruler, a hairbrush, whatever you have available) 25 times.
3. Time to do an atomic wedgie. Take a picture and upload to eblue, and post on this thread:
https://www.getdare.com/bbs/showthread.php?t=399074.
4. After half an hour, you can finally pee, however, you must do it in 5 seconds. No matter whether it has finished or not, after the time's up you can't let even a drop out. Wait another half hour before having more 5 seconds of peeing. Continue for as long as needed.