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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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2
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 May 27, 2011
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"Did you see that guy over there?"
"OMG yesssss, must have been a SEM"
by urbandictionaryperson123456789 October 23, 2011
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The vengeful act of crapping on a lover's chest while they sleep.

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SEM: Self-centered Egoistic Maniac

A person who has the highest opinion for himself/herself that is very annoying.

Someone who is obsessed with himself.
Person #1: Look at her. She is obsessed with herself.
Person #2: She is such a SEM.
by Jana-Blonde June 29, 2009
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The vengeful act of crapping on a lover's chest while they sleep.

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Sem: Semen Eating Monster
A ugly, fat, skanky, female. Most likely has some sort STD, like crabs or scabies. Likes to fuck anything with a penis. An outcast.
a) That bitch is such a SeM, its discusting.
b) Fuck that SeM and her skanky ass.
by kjdfhgfhdf March 07, 2007
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He's warmer than you think.

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(n) Ebonics for the number seven.
"I keep it crunk twenny fo'-sem!"
by Lil Dre March 21, 2006
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7
Internet slang for "same." It's usually turned into a joke by a friend when the friend types "en" as the next comment.
Person A: Lmao I wanna die
Person B: Sem
Person A: en
Person B: I hate you
Person A: Thx
via giphy
by I'm a potato March 19, 2017
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