j21758 - A head-in-the-clouds fool who can’t see the world around the

A head-in-the-clouds fool who can’t see the world around them. Usually for people who flunked and still didn’t care.

He’s a J21758, he tripped and still didn’t look where he was going.

She’s a J21758, she fell off a bench and still didn’t notice the floor.

You’re a J21758, you flunked a test and still didn’t learn anything.