An extremely undesirable, completely unpalatable option offered up as if it were a tasty, delectable treat. Effectively the dessert counterpart of a shit sandwich.
Man, that raw meat strawberry trifle is a total banana shit sundae.
When a corrupt dirtbag gets caught breaking the law, then responds by simultaneously shitting himself and blowing smoke about a mythical "deep state" conspiracy.
D.H.: "Hey, I didn't misuse campaign funds for THC vaping and golf outings! That's just the Deep State trying to frame me!"
Voters: "Dude, you're deep sharting. Just GTFO and go directly to jail."