In the hospital setting, I'm sure he gets away with a lot less of his bullshit. Nurses, aides, and other disciplines have no fucking time in hospitals, and they waste none of that already overbooked time on fat assholes that want others to do everything they are perfectly capable of doing themselves. If PT and OT clear him for self transfers or supervision-only transfers, no nurse or aide will buckle his ass up and heft him around. As for hygiene, given his current mobility and awareness level, he'd get a basin of hot soapy water, a bunch of washcloths and towels, and told "I'll be back in 15 minutes to help dispose of your linens for the day". Best of all, they do it because the goal of hospital care is discharge at your best level of self-care: they make you do your own shit because it's in your best interests. Hospital medical staff are notoriously hard to lie to - even in the case of munchies, they know patients are full of shit and will do the bare minimum required when they know it's a ruse. I'm sure Jonny had been the subject of many a laughs around the coffee pot already.
Jonny, those hospital workers see right through your bullshit and are laughing their asses off at you and your mom as soon as they're out of your sight. You know it, they know you know it, so why don't you hire a "private health services" aide? Oh right, wrong color skin, typically.
I can assure you - if this fat fuck calls 911 or what ever those syrup-suckers use up there from his hospital room, he'll have his calls routed through the hospital switchboard and in severe cases his phone removed.