He peers down at them through his glasses, grinning and reaching his long left arm out. To the kids, these are very high-fives: Tacko Fall, high school senior, is 7-feet-6-inches tall. And growing.

The morning greeting looks like a homecoming for a visiting hero, even though Fall is simply on his way to the gymnasium during his free period at Liberty Christian Prep. When he enters, more kids serenade him: "Tackoooo!!!"

He smiles and stands under the basketball hoop, reaching up with that same left arm and nearly touching the rim without lifting his heels. He smiles for a photo. He's used to that. He gets snapped wherever he goes, even without his permission.

He understands. He's one of the 60 or so tallest people known ever to walk the Earth.