Blackrolled 

Similar to the Rickrolled internet trick, where an unsuspecting websurfer is forced to watch a Rick Astley music video while on an internet forum, message board, etc. However, being Blackrolled involves the substitution of Rebecca Black's video "Friday" instead. Blackrolling is a much more trendy and powerful way to punk someone out and should be used sparingly.

I was browsing through some weird fetish porn when some asshole Blackrolled me. My boner was gone instantly.

Blackrolled by GK One April 7, 2011

Blackholing 

When a penis gets stuck in a vagina during coital interactions, as if the penis got vacuumed by a Hoover Dirt Devil.

Julie was notorious for blackholing her victims into submission.

Blackholing by Nicholas Kumar December 6, 2011

Blacknowledgement 

This is the process by which a Black person acknowledges another black person's presence in a social environment where black people are scarce or otherwise absent. These environments include places and events like: lacrosse parties, ice hockey games, early morning classes, Russia and The Ku Klux Clan Annual General Meeting.

Blacknowledgement is a show of solidarity and support indicating to another black person that you understand their social anxiety and feel their inner torment.

www.stuff-about.com

A blacknowledgement can be executed using anything from a simple nod to a well executed six part, click and snap, integrated handshake. In less friendly situations, a blacknowledgement may be used as a territorial gesture. It can be used to signal to another black person that you are the resident black person in that environment and that they should cower off and find non-black friends of their own.

Blacknowledgement by Africanlegend October 22, 2009

Alabama Blackhole 

When two guys are doing the same chick in the ass at the same time and the'yre all cousins.

Guy 1: You hear about Dayrl and Bill?

Guy 2: Ya i heard they give their cousin cindy the old alabama blackhole

Alabama Blackhole by mrfleshwound July 4, 2009

drama blackhole 

In reference to a person that attracts drama with the strength of a black hole. Especially if it's about interpersonal issues.

"My ex has turned into a total drama blackhole! She's talking trash to my friends!"

drama blackhole by thegoodex November 23, 2009

Blackhole 

A single point of infinite density and mass. Blackholes mass is so great that nothing can escape it's gravitational pull, not even light.
Blackholes are supposedly a reality but there is no way (currently) to prove that they are what they are. Blackholes are created by a star or planet of great mass exploding and then collapsing in on itself creating a gravitational pull that just pulls everything in more eventually ending in a blackhole. Blackholes are often identified by circles of light that orbit them because of the gravity. Blackholes also give off X-Ray and infared signals making them easier to discover.
Blackholes are often theorized as tears in the time-space continuum meaning they can be portals to other points in space or time. Many sci-fi books and movies theorize blackhole possibilities, such as L. Ron Hubbard's "Mission Earth" novels using blackholes as an energy source.

Bob: If a blackhole existed on Earth for more than 3 seconds, Earth would be gone.
Joe: But I hear scientists are attempting to create bla-- *Earth is sucked into blackhole in 3 seconds*

Blackhole by ZZM v2.6 May 6, 2006

Atomic Blackhole 

When 2 guys are fucking the same chick and she turns around and you throw hot clam chowder on her face...kinda like a atomic black hole.

Billy and Joe gave Brittany a really soupy atomic blackhole.

Atomic Blackhole by ArtWheatley March 1, 2014