factoid - A tiny fact that someone just said. It's like a fact that's

A tiny fact that someone just said. It's like a fact that's too small to matter.

"That’s just a factoid.", said by a kid who just said a tiny fact.

"That’s not even a real fact, that’s just a factoid.", said by a teacher who’s had enough of tiny facts.

"That’s the dumbest factoid I’ve ever heard.", said by a kid who just said a tiny fact.