Another good write up by Steve.

Can be found here. I have only seen one time here a rider take his hand off the bars to push someone over or said "on your inside." It was a Waste Management dude and he did it for no reason. Mostly if a Belgium rider is taking his hand off the bars it's usually to hand sling you forward or flip you off. When someone says "on your inside" I just ride normal... It's not my fault they are riding stupid so why do I have to change my line? And when people push me I usually just go back into that same spot anyways. Touch some one here in a way that's not moving them forward... I think you may end up in a ditch for that.