One who pushes their big fat face into other peoples business disregarding the factual nature of any subject in hand. Tends to sport large ears of an elephants appearance and has absolutely so respect or consideration for others. This type of person is an enormous gossip and is never happy until they have ruined everyone else's lives. Don't ever confront a Jerns for they will take you off of their top 8 or write a myspace blog about you. Most of the time you can't tell if they are male or female.
Dude 1: "Hey, what the HECK is that?"
Dude 2: "Oh, that's a Jerns, man. You can never tell!"
"That was SUCH a Jerns move."
Testicles. Balls. Cajones. Most often used in an insulting manner, especially in reference to sexual favors or to talk to prostitutes.
Get on them jerns bitch!