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2.
Term used to denote an individual other than one already referenced.
"I can't believe it. My girl's left me. She's fucked of with some nextman."
by D,Powell September 27, 2006
 
1.
1. A term used to describe a man you don't know but is or has been relevant to some aspect of your life.

2. A random guy.

Generally used in a derogatory sense, expressing distaste for the person in question.

Derives from the phrase 'as much/well/good as the next man'.
'So I went to the club expecting to hook-up with Kate but she was there with some next man'

A 'How did you get that black eye?'
B 'I was just minding my own business and got shoved into a wall by this next man, so I got mad and ended up in a fight with him'

'Who's that next man?'
by Perm August 03, 2006