substitution?

[ProfessorChaos]

Well i have a drug test coming up. So here is my plan, get clean urine and put it in a 3oz bottle along with a pocket warmer. Tape them to my inner thigh under my balls. Anyone think there would be any problems here? It should be plenty warm right?

[Deige]

You only need 2oz but I think you should be good on the temperature.

[killerweed420]

I would use a cheap thermometer to check the temp while practicing.