Technically, it’s a vanish and reappearance, but I think of it as more of a visual gag.
You hold a necktie with both hands, and as you move your hands down, the tie vanishes. Move one hand back up, and the tie reappears.
This move can be performed with any tie, though the skinny ones are best. You’ll be performing TieGo in no time. Very easy, very fun. Taught in just 6 minutes of instruction.