The act of walking towards another person (Usually of the oppisite sex) until you reach the same point there at. You stop, then move sideways, but they do the same thing. So basically, you end up moving side to side until the other person realizes they have to go the opposite way as they were going before.
Jake: Dude I just had the Side-To-Side dance with Roshell!
Brian: Dude, I HATE when that Happens!