Move to Nova Scotia...all kinds of things will make you shake your head. Like people who can distinguish caliber by sound.
Oh that happens here too. I have range membership, so I've seen some really little guns make ridiculous noise (it's amazing how loud 556 is from a super short barrel with a brake)... I've taken a friend to the range a few times, and he's always commenting about the bangs while in the parking lot... "oh man that musta been a 300 sooper magnum or something!"... And of course, he shoots patterns not groups with his 300wm...