Your arrogance is noted.

That trick is the oldest technique I know of for checking shocks. My old man worked car lots when I was a kid and I've seen him do it on all kinds of vehicles. If the shocks are shot, the vehicle will "bobble."

But since you asked and also appear to know better without trying, why don't you go ahead and take it to a shop so you can watch and pay them do the same thing before they do anything else -- probably done by a kid who weighs in about 175 lbs.

Good luck with finding the fix.