Picking a product up and not putting it back where you got it when you set it down.
Taking the packaging off the skateboards and riding them around the store. You deserve to bust your ass and I will not feel sorry for you when it happens, in all likelihood I will laugh my ass off if I see it happen.
For that matter, riding the bikes in the store.
Complaining that you have to purchase the ammo at the sporting goods counter. No you cannot take it up front to pay for it when you pay for your groceries.
Complaining that I asked for your id when you asked to see a gun, if you aren't 18 or with a parent you aren't touching it.
And I completely agree with not controlling your kids, it makes my day when I see a well behaved kid, but I don't see them too often.
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So what happened to Simon at the end of TTGL?
http://media.giantbomb.com/uploads/0/3305/187426-after_cid_large.png