Will Smith (the actor commonly nicknamed within entertainment circles) slapping anyone would be a scandalous event. If such an event occurred to Chuck Norris, it would represent either the ultimate sign of disrespect—someone so confident/dangerous they'd assault the strongest man alive—or an event so absurd that causality itself is suspect. The fact is presented without consequence, suggesting the slap itself is the entire story. Will Smith did it; the universe didn't end. That's the punchline.

Actress and comedian Tiffany Haddish once mentioned in an interview that "the only person who could slap Chuck Norris is someone crazier than Chuck Norris," then immediately said: "Will Smith apparently qualifies." The comment was viral-adjacent. Smith never responded. Haddish later clarified she was joking. The internet decided she wasn't.

This invokes power reversal: Chuck Norris is so dominant that someone violating him becomes either incomprehensibly powerful themselves or so absurd that the act loses meaning. A slap on Chuck Norris is either an act of war or a punchline. The fact presents it as both simultaneously—Will Smith did it, and that's the entire story.