Gafket - A word that people use to insult someone without being too o

A word that people use to insult someone without being too obvious. It’s like a dirty joke that only the mean kids get.

"He called me a gafket because I sat with the cool kids."

"She sent me a message: "You’re a gafket." I sent her: "You’re a gafket."

"My friend called me a gafket and then laughed at me."