Rise Up, Oh Heart, For There is Another Battle to Win

How do you explain Good Omens to someone in a compelling way without sounding like you’re off your metaphorical rocker?  I mean, usually I default to “JUST TRUST ME” or “IT’S NEIL GAIMAN AND SIR TERRY PRATCHETT” and depending on the person one of them usually works, but now I’m trying to convince a not-very-close friend who is uncultured and deprived and therefore unconvinced.  I considered the “Well, gay” angle but???  Not sure if that’s valid and also don’t want to force my ship onto this guy.  (I mean, I’m confident he’ll get there on his own, but still.)  I don’t talk to people enough to know what I’m doing here, I’m kind of inclined to be like “the Horsemen of the Apocalypse ride motorcycles and an angel performs a miraculous bicycle healing and the car turns everything into Queen and it’s not really the demon’s fault that they lose the Antichrist it’s actually because the Satanic nuns need a better screening process.”