He's a prisoner with a bit of an attitude, but although he probably thought the guards would be the main problem he should have considered the horniness of the prison doctors who don't have the same rules. He's not complaining when their wet cocks are out for him to suck but maybe he's not used to taking two dicks in his ass one after the other. After getting a good anal inspection from those stiff boners he spurts his load and the docs are left to their own final fuck, splashing their splooge around in a big messy finish.