Well, if memory serves, YM is $5 per tick and 1 tick per point?
So $500 for a 100-point move.
That is not chump change on 1 contract. Now extrapolate that to people doing 2, 4, or 10 contracts.
Now what if it's not a YM, but ES. (Remember? That seems to be your favorite instrument in the universe.) That's $12.50 per tick, and 4 ticks = $50 per point. So 100 points in ES would be $5,000. Now extrapolate THAT to 2, 4, or 10 contracts. You MUST treat trading with respect, or it WILL fuck you.
You dig?
Do you know how stupid you look, D1

If you were not jumping around like a monkey, you would ask David how many contracts he holds for the YM trade he mentioned. If anyone takes ye lot seriously, then they really need to have their head examined