bottom block 

psychiatric ward in a hospital

The psychiatric ward at Oldham Royal infirmary England is known as 'The bottom block.'

bottom block by Rogeraries January 4, 2008

black bottom lighter 

Refers to the bottom part of a lighter (usually a BIC) that has been colored black due to the amount of times it has been utilized to compact ash and residue from smoking pot in a bowl.

You can tell that this black bottom lighter has put to good use!

black bottom lighter by bbladmin January 2, 2013

black bottom collective

An Amazing and Powerful band of political and funky hip hop artists from Detroit!

Zulu Nation, Tribe Called Quest, Santana, Prince, KRS-ONE are examples of music similiar to Black Bottom Collective

black bottom collective by KUNDUN December 15, 2007

black power bottom

A gay black man who is a power bottom and also a fierce fighter/defender for black power and black rights.

Frank: take this ass bitch, power to the people. This is for you Malcolm *raises fist whilst riding pipe*.

Donny: oh my gosh, you’re such a black power bottom, and I think I’m gonna cum.

black power bottom by SupaBoiii May 3, 2022

bottomlock 

Refers to any fanfiction involving Sherlock Holmes smut where he happens to be the bottom.

Jessica: Man, I wish there was more bottomlock in the world
Michael: Me too, but that fandom is a gold mine for potential smut

bottomlock by TheSilentAce June 12, 2016