I think we may have a winner for the sketchiest thing ever done on a RipStik. First invented in 2007 and was sold by Toys’R’Us in 2008, The RipStik caster board uses 360-degree, inclined casters and a pivoting deck to move the rider forward with a unique twisting snake-like motion. They are a pain to learn but pretty satisfying once you get the hang of it. As for riding one on the ledge of a highrise, not advisable. If you want to pick one up for $89.99 GO HERE:
Just a reminder, this is an original ad for RipStiks aired on tv back in the day: