This is honestly a really amazing idea. Start a new campaign, make everyone create their characters, and inform them their stats determine how they'll make their real characters in Suburbs and SUVs.
Why even bother with a dream? "As soon as your hand touches the chair, everyone in the room is flung into a parallel dimension, each of your consciousnesses replacing the consciousness of the previous host, Quantum Leap-style. You are all sitting in a high school cafeteria on folding metal chairs...."
Then find a way to tell the players that you all need to somehow get the low-INT barbarian inhabiting Karen's body elected PTA president before their consciousnesses can be returned to their original bodies.
There's a webnovel that had a whole side plot regarding this. Can't remember the name, but plot was a protagonist was a dwarf that couldn't die. So he just went around wandering and learning stuff and somehow ends up intimidating kings with offhand gestures.
Relevant part was the side story was the gods of the realm playing Karen's and drive-ins, where they played against the other gods by role playing as Karen's going to school board meetings and intimidating other parents