When a nice guy wants to tell somebody that he should fuck off.
Some Random Asshole:Hey Nice guy you suck ass
Nice guy: well fuck you but have a nice day
The old nickname from Eminem what was a combination of the first letters in his first and last name
Marshall Mathers
Person 1: Yo dude you know what was Eminems nickname before Eminem
Person 2: Yes it was M&M