A guy you are not officially dating but he takes you to parties, buys you things (drugs, food, etc) and fucks you at night (or day). He treats you like a girlfriend only when you are together in person, not otherwise. Basically a friend with benefits+arm candy+sugar daddy.
Also, you can have multiple mancandies depending on how many friend circles you have and where you are going to go with each of them. One may take you to parties while another may take you to movies.
"I'd go but my mancandy wants me to stop by his place before we go to _____'s party"
"_____ found out about my other mancandy, and he is SO pissed. I guess he didn't understand how all this works, we are NOT dating"