Top definition
before a male has any physical penal or oral contact with "strange" vagina, he must first "check the oil". a simple dip of the finger with a discreet sniff, sniff will do. if the oil needs changing the test finger should be jammed into the female's nostril. if not, have at it, til its done swoll.
yo gashmaster, what's that gnarly patch on your upper lip? didn't you check the oil before lickin the wound?

after checkin the oil, i told her to turn around for some puppy.

by buzz August 18, 2003
Get a check the oil mug for your girlfriend Nathalie.
Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
Get a brain worms mug for your mate Paul.
2
to stick ones thumbn in another persons ass hwhile they aren't expecting it. this is commonly known as checking the oil!
once on has checked the oil it is prpoper to charge them fo rthe service with the credit card.
hey man why did you just stick your thumb up my pooper?
"yeah your oil is a little low "
by the guy rules April 21, 2005
Get the check the oil neck gaiter and mug.
3
When preforming the sexual act of "the shocker", after you insert the "stink finger" you lick it off, as to "check the oil"
Man, she was so gross but I checked her oil anyways
by Billy Leblanc April 24, 2004
Get the check the oil neck gaiter and mug.
4
before a female has any physical contact with "strange" wang, she must first "check the oil". a simple dip of the finger with a discreet sniff will do. if the oil needs changing the test finger should be jammed into the male's ass. if not, have at it, til you're satisfied.
by pun tang October 17, 2003
Get a check the oil mug for your Facebook friend Manley.