Third Gear 

1)Third gear is another way of saying mackin', or pimpin'. like- 3rd gear in a mac truck.

2) Third gear is that stage when a male and female are inbetween being just friends and "officially" dating

3) It may be used to describe overdone affection between a dating couple

4) It may be used as a synonym for girlfriend or boyfriend.

Noun--
1)Hey, are you in third gear with Lindsey?
2) Greg, where is your third gear?

Verb--
Wow! Matt and Jamie are really third gearing it.

Third Gear by Melizabeth Butler April 18, 2008

Third Gear Autism 

When you come up with an idea and get fixated on it immediately.

"Dude I just hit third gear autism."

Third Gear Autism by sodawoda August 20, 2023

Third gear, bumper to bumper

used to describes someone or something thats extremely gay in nature
(please use this term with caution if you yourself do not drive in third gear, bumper to bumper)

"do you think he drives in third gear?"
"Oh yea, he definitely drives in third gear, bumper to bumper!"

Third gear, bumper to bumper by skypup May 9, 2026

Putting someone in third gear 

When you take a man by a sack and use it like you would a car shifter.

I’m putting someone in third gear because they stole my car

Putting someone in third gear by Bigger men than yours April 11, 2022