Parents (and other adults) who talk to children like they're mentally disabled.  "Hiiiii....how are you todaayyyy......okaaaaayyyyy?"  They do it with an annoying voice and baby talk.  I'm a parent and I've always talked to my son like he was an adult.  I may dumb it down a little and not use too big of a word, but I always talked to him and treated him with respect.

 

I remember adults talking to me like that when I was a kid and I'd think to myself, "Does she think I'm an idiot?" 

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