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SEM - Selective Edited Memory

When you are involved with a chick that recalls certain things of the conversation but edits what was said to throw something in your face. Worse then paraphrasing. It was more commonly referred to as "psycho bitch" in the 90's until scientific advances were made in the origins of such behavior.
Mike: She told me that I told her to stop loving me. Definitely has SEM - Selective Edited Memory.

Tom: Isn't that called psycho bitch?
by Wally Krunk from the grave December 2, 2010
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Sem

The greatest person in the history of the universe, everyone who meets him wants to be him or be with him.
Man I wish I was Sem!
by Erin Maxwell October 14, 2011
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Sem

Abbreviation of "awesem," a slang version of "awesome." used commonly on student film sets in the Chicago area to refer to something extremely cool or pleasing.
- "hey, the car mount is ready."
- "SEM."
by SylviaToo January 23, 2010
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sem

A man who is very kind. He had the most beautiful eyes in the world and everyone likes him. He's also very funny and with that character, every girl falls for him.
Sem is the kind of man who every girl wants to marry.
by #######dishssssssss February 10, 2018
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sem-dog

A half boner, or semi-erection where the penis is not yet completely erect, but not completely flacid.
Dude, that super hot chick gave me a hug and before I had any idea I was sporting a mean sem-dog.

Can I get a sem-dog for my Rem-Dog. (Said when you want your friend Remy to get some ass).
by Schloss January 13, 2006
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SEM

"Did you see that guy over there?"
"OMG yesssss, must have been a SEM"
by urbandictionaryperson123456789 October 23, 2011
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Sem

used instead of "same".
"I eat pizza last night."
- "sem, me too."
by weeb-attorney January 19, 2021
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