He hasn't actually gotten to test it on another person full force yet, considering Greg is the only one who knows. But he's pretty sure he can. Confident, even. Like he's done it many times before.

Sans guides him around a turn, into a stairwell. Except, when they cross the boundary into the stairwell, they don't end up in the stairwell. Instead, they are suddenly in a private little corner of one of the balconies, as if taking one step forward suddenly became multiplied by a factor of whatever Sans needed it to.

He didn't even have to touch him or anything.

"Welp...heheh. Here we are!"