an cracked out african-americanmale, most likely found in the downtown city streets of St. Louis. also known as "barglin ass nergon", if you see a nergon run...they may bust a cap in you.
The sound that results in taking one's penis out of an asshole that was ejaculated into, and it all slops out.
John: wtf is a nergo anyway?
Willy: its the non racial way to say nigger
Willy: stupid shit
John: no, that would be NEGRO
John: NERGO sounds like something that happens when i pull out of your ass