Checking the oil

When you have so much grease and mold saturating the pubic hairs in the region between your gooch and your innermost cheek, that you can barely walk another step, and therefore "check," the oil. Depending on the circumstances one might: change your yellowing, mud-stained briefs, or dispose of them in the nearest body of water.

Goddamn! It's so hot out here that there is anal waste and sweat running down the bottom side of my thigh out of my shorts! This definitely requires checking the oil

by Dr. Dong Tip September 16, 2015

check your oil

ramming your fingers up someone's ass

Hey, let's go check his oil!

by caesar December 09, 2003

Checking her oil

A test to be preformed on a chick before eating her out. Finger her a bit and catch a whiff of your finger and you'll know if its safe to proceed.

Use your finger like a dipstick to check her oil

Yo man i checked her oil and knew it was safe

or

Yo man i checked her oil and DAMN!!! Was that a stank pussy.

by Herb311 October 26, 2004

checking your oil

When one inserts their finger in their own anus in order to gauge their personal stink level.

Don't touch me bro, you been checking your oil

by Informersno March 15, 2016

check her oil

When engaged in foreplay or intercourse you insert a finger or fingers into your partners anus, thus "checking her oil".

"As I was doing my girl in the doggy position I reached down to check her oil."

by Natedogg370 November 16, 2007

Check your oil

A prostate exam.

I went to the doctor because my nards were sore and the SOB checked my oil.

by t June 29, 2004

check your oil

When someone pisses you off enough that you threaten to stick something, like your foot, up their ass.

Dude, if you don't stop that shit, I'm going to check your oil.

by Oz in the ATL June 23, 2007