The act of gay sex in front of one's cat.
Bruce and B.H. were really Semming in front of B.H.'s cat.
by gigi FN July 8, 2011
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Verb; to show a lack of effort
We all met at the movies except Todd. He did not call, didn’t text, he was semming.
by SaveSam91 July 23, 2019
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simply put, Sem sem is a nickname for the love of your life, she is the best person you will ever met. Sem sem's are very sensitive, but this is actually what makes them adorable and cute. Sem sem's usually have the sexiest eyes in the whole universe and ,if we're still being honest with each other, is probably going to be the most beautiful person you will ever see in your life. Sem Sem's adore attention so dont be afraid to express your love in every and any way that you want. Sem sem's are princesses and should be referred to as "yene fikré" or "yene konjo" Sem sem's come into your life to show you how pure and exciting love can feel. Aside from their intoxicating beauty, Sem Sem's are people you can be safe with, and if you ever be lucky enough to meet a Sem sem than you should always treasure them and keep them close.
i met my Sem sem 2 months ago and we are getting engaged!!!
by shInad January 5, 2023
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This nigga is loved by everyone. Either you love him and if you don’t you probably don’t know him. He is one of the kindest people you know, he puts others before himself regardless. He is really strong considering his size. People under estimate him all the time. He got hella chicks on the low. He probably doesn’t need you but believe me when I say, YOU NEED HIM.
by Petter123 March 3, 2019
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Sem is a person who is very kind hearted and amazing. He might be a bit silent in the start, but if u keep talking to him, u will find out what kind of amazing person he is. If you have a Sem in your life, u are not only extremely lucky but also more happy. Sem has the most admirable smile, and light up your mood every time he smiles and laughs. Not only the fantastic smile he has, his voice is also quite amazing, u will never get tired of listening to it!

If you have a Sem in your life, get ready to feel more happy, and WARNING: u will get attached to him fast!
Why are you so happy lately?

Oh I just meet a Sem
by Cloverd_ November 29, 2021
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The person who treats his girl lika a queen. A person who loves sport. He is the boy that is strong mentally. He is a very, very beautifull boy, inside and outside and that is why girls loves him soo much!!
Sem is so polite and beautiful at the same time!
by S OG December 10, 2016
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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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