Outdated "manners" you'd like to see go away

CapitalCitySaint said

Not being able to spank other people's children. This needs to go away because some people's children need to be whooped!

(this is only partial sarcasm)

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Ah, hell, yeah. When I see children running around in stores or restaurants, it's hard for me not to walk up to them and remind them that other people aren't as practiced at ignoring their children as they are.