Main Vocal 

The Main Vocalist is usually the member with the best singing technique, who gets the "most difficult vocal parts, but not limited to

Wendy from RedVelvet is really the main vocal of this generation

Main Vocal by Ms.Voidwolf April 7, 2021

Main-Bull 

Big man in charge , has charisma . Rule a crew like a real gangster.

Wow if the Main-bull , in charge of our crew finds out we didn't cut him in his shareofour score we gonna get clipped !!

Main-Bull by Jerzey mainbull Jay-Bird . November 14, 2022

main slayer 

this phrase is used to say that someone is doing extremely well. it's a superlative form of "slay", so when you call someone main slayer they're the slayest of them all.

invented by kpop twitter.

Kylian Mbappé main slayer. He scored a hattrick at the 2022 World Cup Finale.

main slayer by jik00k3r December 18, 2022

main bitch 

A girlfriend, or significant other, often shortened to m.b.

I gotta' call my m.b.

main bitch by kellz February 21, 2004

Main Vein 

The large vein that travels the length of a cock. Instrumental in delivering blood from the central artery during erection.

My cock was so hard, my main vein was swollen with blood.

I saw my heart beat as the main vein of my cock pulsated with blood.

Main Vein by Tony from the Lido September 21, 2011

main street muffin 

When a woman serves you muffins while also serving you sexually

She gave me a main street muffin (blueberry) and I returned the favor with a batch of banana nut dough all over her face and titties

main street muffin by Uncle Tyler September 21, 2008

main fist 

mainfist/main fist:
First the term'fist' must be understood here as 'to screw someone over'/'do someone in'.
A main fist is someone who constantly/ perpetually annoys someone/fists them. Similarly, it can also mean a person who has commited a highly appalling act of fisting (non sexual). It can be used to refer to a person or a company/coporation. It can also be used as a jokey affectionate term for close friends/family.

The term originated in the north of england.

"Main Fist Mr.Smith gave me a 50000 word essay to do."

"mainfist checkout girl just fisted me trying to charge me double for my pineapple."

"mainfist."

"proper mainfist"

andy: "ye man, main fist wont stop calling my phone and now she posted pictures of me all over campus saying I'm crap in bed."
dave:"main fisting action there, mate."

main fist by Main Fist April 18, 2008