bearings 

the part of a skateboard that makes the wheels spin, instead of having them stick everytime they go around

man i need some new bearings....mine are rusting, that aint good

bearings by Ben Carrion June 30, 2004

Ball Bearings 

What you say when you have no idea how something works. Usually referring to something technical of which you absolutely have no fucking knowledge

‘It’s all ball bearings these days’ said the airplane salesman to the mechanic fixing fuel line of true plane.

Ball Bearings by Sedamsville14 October 31, 2019

Muffler Bearings 

Contrary to popular belief, muffler bearings do exist, just ask your local dodge stealth or mitsubisi gt3000 owner. Although a popular prank to pull on the not so automotive savy muffler bearings are located inside the muffler, in order to operate a flap which opens and closes depending on the exhaust flow directing flow back into the turbo. Due to inconvienience (carbon/other buildup often jammed the bearings causing noise and poor performance) the bearings are only found on older models.

Hey go into the garage and grab the blinker fluid and spare muffler bearings!

Muffler Bearings by carCHICKknows April 4, 2009

Muffler bearings 

A real howl for prank-calling kids of our 70's past: get a naive auto parts clerk on the phone (dumb teen, etc.) and ask for "muffler bearings". A bigger howl when they realize the gag, and get back on the phone and cuss you out.

Obviously dated, due to caller ID.

Related to asking for "Johnson Rods"

see above described usage

Muffler bearings by Zelph August 9, 2004

skateboard bearings 

a word synonomus with marijuana.
it orginated in west san-jose, in the early 21'st century.
useage:
code for marijuana

"dude, i just bought new skateboard bearings!"
thats sick dude, lets go install them after school!

skateboard bearings by california145 February 16, 2010

Muffler bearings 

A fictional term that bullies use when they ask questions or give maintance advice to ricers.

There is no such thing as muffler bearings however most guys who know nothing about cars can easily be convinced that it is part of their maintance.

Ricer: Is there anything I need to know before I install my new exhaust system?

Bully: Make sure to grease those muffler bearings before the install (bully laughs under his breath)

Muffler bearings by truckguy6 December 15, 2008

Ball bearings 

When you orgasm so hard you are dizzy and are trying to get your balance.

Usually said while trying to get them a towel or glass of water.

"I came so hard, hold on while I get my ball bearings"

Ball bearings by Tyler_dm November 10, 2019