Post your and your friend's nick name..!!

In a friends circle most of student are popular by it's nick name.
Nick name are given by the property of a student😀cool😀.Most of my college friends name is as follows Khakhori,Dadi,Thita,sus,Chakchuk,Motiyabhaishan(motivation)...many mores.
Among above mentioned i like motiyabhaishan the most given to the first bencher in my class.
They looks vary fatty.And now they are the toppers of my branch😀😀😀()....
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I have also a name cboy(Because c is mostly used word in a computer science and engineering).
Well i give this name to myself but now it's vary popular among my friends.
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Now it's your turn you have to post some names from your friend circle also yours.
And give the reason why they named so to you.