Can't take a simple order!

About a week ago i attended a Godsmack concert (freakin' awesome by the way) and I noticed something... even if you tell someone "DON'T MOVE I WILL BE RIGHT BACK!!!" (the caps are cuz you have to yell over the music) when you return to that spot, they are nowhere to be found.
This doesn't always just apply to Godsmack concerts, but to exhibitions, bars, clubs, anywhere there is a mass amount of people in one area.
You usually end up spending the next hour trying to find your friend(s) simply because they are your ride and you know they won't hesitate to leave without you:
Friend number 1:"Where is Matt?"
Drunk Friend number 2: "He got a ride with someone else, lets go!!!"

yeah, thats all i got to say about that...