Thompson as the pint-sized scene-stealer from "Role Models" and "30 Rock," you might want to sit down for this one.
The former child star has resurfaced on social media timelines looking almost unrecognizable, and fans are doing the classic double-take that comes with every grown-up kid from your childhood.
Thompson, now in his late twenties, first broke through as a kid with a mouth that could out-joke grown men twice his age.
He traded barbs with Tracy Morgan on "30 Rock" as the pint-sized Tracy Jordan Jr., and he held his own opposite Paul Rudd and Seann William Scott in 2008's "Role Models," a role that basically made him a comedy cult hero for a generation of millennials.
But somewhere between the Disney Channel appearances and the rap career he launched under the name Lil Bobb'e, Thompson stepped back from the spotlight.
That absence is exactly why his recent photos hit so hard.
The baby-faced kid with the oversized personality now looks like a full-grown man, and the comment sections have basically become a group therapy session for aging millennials.
It's not just the looks that have people talking.
Thompson has been candid about the awkward, often brutal transition from child star to adult entertainer, a path that has chewed up and spit out plenty of former kid actors.
He's talked openly about the pressure, the typecasting, and the reality that Hollywood doesn't always know what to do with the kid who used to be the punchline.
Thompson has spent years pushing into rap and comedy simultaneously, dropping tracks and freestyles that show the same irreverent energy he had on screen as a kid.
Whether the mainstream is ready to take him seriously as an adult artist is an open question, but he's clearly not waiting around for permission.
And let's not forget the nostalgia economy he's accidentally tapped into.
Every time a "Role Models" clip or a "30 Rock" throwback resurfaces, a fresh wave of viewers rediscovers him.
It's the kind of second act that doesn't require a comeback tour, just the internet doing what it does best: reminding you that time is undefeated.
Thompson's story is a reminder that child stardom isn't a destination, it's a launchpad that some people stick the landing on and others have to figure out mid-air.
Either way, the guy who once stole scenes from comedy legends is still out here, just no longer small enough to disappear into a punchline.
Former kid stars owe us nothing except the memories, and Thompson delivered plenty of those already.
Final Thoughts
If the next chapter looks nothing like the first, that's not a tragedy, it's just growing up in public.