Piss on your medium dildo over a bowl before sucking on it for 10 minutes, cleaning it with your tongue and dipping it back in your piss whenever it's too clean.
If you get a boner, deepthroat it 10 times for 20 seconds each, drink all the piss and then lock in chastity for 3 days, repeating the pissing on the dildo and sucking it for 10 minutes every day to teach you to stay soft.
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