The lead dancer, rapper and sub-vocal of the Korean boy band EXO and its sub-unit EXO-K. It's a well-known fact that Sehun excels in many things that you simply do not - for example, he dances better than you, looks better than you, and has a better booty than you.

It is advised that both men and women do not look directly at Sehun for more than 5 seconds at a time: this can result in numerous health issues that your doctor cannot explain.
Did you watch EXO's new Lotto MV? Sehun slayed it!
by jxnghwxmy August 18, 2016
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Another way to say "I'm fine", "I'm good" or "I'm feeling great".
A: "How are you?"
B: "Sehun"
by andax February 24, 2018
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A feeling. That’s all. You always feel sehun.
You: How are you today?
Me: I am feeling sehun
by Dani lel February 24, 2018
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It is used to describe a state of being. Feeling Sehun correlates to feeling a sense of sass in one. It is a combination of sassy and happy.
Question: How are you today?
Answer: Sehun *Flips Hair*
by MaJeonYixChanRu February 25, 2018
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A Korean man's name. Usually, he is a very sassy man and can be fierce. He is cute but at the same time sexy. You honestly don't know what to expect with him.
Synonyms: Noodle Boi
Antonyms: Loser
Fangirl #1: OMG look at Sehun!
Fangirl #2: *in a deep manly voice* he got a fat ass
Fangirl #1: *looks at fangirl #2 weirdly, starts scooting away*
by Gleek100% April 17, 2017
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