Boltnut 

Another term for an impact socket that would be used on an impact gun. This term could also be used to refer to someone as a complete and total retard.

"Hey, give me that boltnut so I can take this tire off foo!"

"The new guy at work is such a boltnut."

Boltnut by sickinthehead May 6, 2009

boldnut 

Someone piping up thinking they're proper hard

Is that James getting bold to Dylan, he's a heavy boldnut

boldnut by DylanJonAlexanderBohemiam February 2, 2024