When some is saying some really dumb shit and you need them to shut up
Guy 1: bro what’s Obama’s last name?

Guy 2: you have post traumatic down syndrome if you don’t remember Obama’s last
by BONDEDFOOL April 22, 2020
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Post traumatic down syndrome - a condition that mimicks down syndrome that is directly caused by Trauma.
I was diagnosed with post traumatic down syndrome .
by Michelle Gee April 20, 2021
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Kind of like a brain fart, but much more severe. This usually happens in a discord call with your closest friends because of course it does.
Friend: Have you seen Mike anywhere?

You: No I haven't seen hyimom.

Friend: Hyimom?

You: Oh my god I have Post traumatic Down Syndrome
by VBSBazooka September 2, 2020
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When you have sex with a down syndrome and can't live with yourself
I can't believe I slept with that downsy I have PTDS post traumatic down syndrome
by Mr giggles February 19, 2023
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