invisible nigger theory 

Why some black people talk so loud.

The invisible black friend that is standing at least 20-30 feet away from another black person, justifying the fact that they seem to be practically screaming while talking to a visible person in arms reach.

Man I could hardly hear you at the bar, it was the invisible nigger theory in full effect

When you're at the market and two black girls are in line next to you talking so loud that you want to cover your ears, they're just trying to make sure that their invisible friend can hear them.

invisible nigger theory by locell2 April 20, 2009

Invisible Dick 

a non-exsisting dick. A girl might use this term.

"Kara: gawdd hes so annoying"
"Ashley: mehh he can suck my invisible dick"

Invisible Dick by Kar Ash February 17, 2009

invisible brake

Refers to the non-existent brake on the passenger side of the car. Often used by mothers with new drivers even when they are driving just fine. often used in conjunction with the oh shit handle.

Michelle started pressing on the invisible brake as soon as her son got in the car, of course, this had no effect on his driving.

invisible brake by dee_gee March 26, 2009

Invisible Truck 

An invisible truck that randomly hits people. When you see it you are supposed to yell Damn, this word often prevents it from hitting you and makes it hit the person with you or next to you.

Dean: DAMN ITS THE INVISIBLE TRUCK!
Sophie: OW I JUST GOT HIT.
Sarah: What..?
Sophie: DIDN'T YOU SEE IT! THE INVISIBLE TRUCK JUST HIT ME!

Invisible Truck by Boazzzz November 7, 2010

invisible ninja 

What some rappers, most notably Devlin fight whilst rapping - Moving their arms around like windmills trying to look "street" they look like they are blocking attacks from invisible ninjas

Dude! Why are you fighting invisible Ninjas! Stop flailing your arms around like a windmill.

invisible ninja by stragen November 2, 2012

invisible boat mobile

The vehicle in which Mermaid Man and Barnacle Boy drive in the Nick show, Spongebob SquarePants.

Barnacle Boy: Aw, tarter sauce. Where did we park the invisible boat mobile?
Mermaid Man: Right over here, I though...
Barnacle Boy: Nope, I can't find- *BAM* ...found it.
Mermaid Man: You walked into it again, didn't you?
Barnacle Boy: *grumble.*

invisible boat mobile by SmalLiberty June 24, 2008

invisible condom 

A product being developed at the Laval University in Quebec.
If it hits the markets, which is likely, it will be able to kill 99.9% of HIV and 90-100% of STDs.
This is a "female condom" which is actually a liquid, solidifying to a gel at body temperature (creating a protective film) and wearing off in approximately 2 hours.

Boy: "Yo baby, lets do it! I forgot protection, but no worries..."

Girl: "Sure if you want, I'll be right back." *Uses invisible condom gel, stays protected, doesn't get preggers*

Boy and Girl: *both happy*

invisible condom by TheEducated March 14, 2009