It takes a good person with a gun to stop a bad person with a gun.
Shopping bags
Why not just make plastic shopping bags stronger instead of making the cashier double bag everything.
Speaker Phone
Do you really need to use the speaker on your cell phone in the middle of a busy restaurant? We don't all need to hear about Aunt Mildred's fungal infection.
There are limits to everything
There are limits to everything, after all remember that Joan River's husband killed himself.