One feature of Neighborhood 12358W is that certain profanities are automatically replaced with other words. In Chapter 1, Chidi surmises that this is because most people in the neighborhood don't like swearing, though since there are only four actual humans in residence, it is likely that the automatic censorship is calculated to annoy Eleanor Shellstrop in particular.
That this also allows NBC to air to the show at 8pm is, of course, a massive celestial coincidence.
Fuck - fork
Motherfucker - motherforker
Shit - shirt
Bullshit - bullshirt
Ass hole - ash hole
Hell - here (after they realize it's the bad place)
Dick - dink