If you're a lady, you want to be discreet. Many men will come and go--sometimes at the same time, but sometimes you have that one dude that you can always rely on. He might live with you, although he might not be your husband. He might float you a little cash occasionally. He's got your back, and you don't want to dissappoint him. He's usually a lover.
A person says "main man," especially so others may hear, to insinuate that they have a number of friends; the target of "main man" is just one of many friends that this person has. When a person resorts to saying "main man" outloud, he or she wants the world to know that he/she has many friends other than the target of "main man," so often the person who says "main man" may have insecurities or personality traits that result in him/her not having many friends.
The homeless person, who does not have manyfriends, said "main man" to me to suggest that I was just one of his many friends.
By Jayne
Main Man Mullet
The Main Man Mullet is a being that is widely considered to be the most powerful force in the universe, even more powerful than god himself. The Main Man Mullet can be found playing Xbox with complete retards to feel smart or fucking fat girls. His mullet is bulletproof and can be used as a cooler to store his iced tea and mystery meat.