It is easily described as how a crab walks. You know when the just start walking sideways. The car just starts to feel lighter all of a sudden and scoot sideways. Really fun.

My only real experience was on a side srteet late at night when the sprinklers had wet down a good 30-40 ft section of 2 lane road. I made a U-turn after making sure the coast was clear. Stopped the car and did a launch off the limiter at 5K RPM. The car just spun all 4 tires but still moving forward at a really fast rate and the rear end kicked out so I was at almost a 45 degree angle on the road. I was still giggling when I got home after that.