Boom Metropolis

A house or residency in which the number of "boom cities" (see boom city)is equal to or greater than 3.

Friend: "Did all of you hook up last night?"
Duffy House Resident: "Yeah, the Duffy house was a Boom Metropolis."

Boom-Dinger

Having an erection lasting for more than four hours.

I had an erection from 1 to 5 it was a Boom-Dinger

Boom Scum

Thugs who use subwoofers as a form of domestic terrorism, and get belligerent when called on it.

Before the Boom Scum invaded this area, we knew what sleep was.

Boom headshot

A phrase made popular by a pro gamer named FPS Doug on the internet series Pure Pwnage. FPS Doug says "Boom, headshot" everytime he shoots an opponent in the head in Counterstrike Source or any first person shooter type game.

n00b: OH NO, It's FPS DOUG!!!

- FPS Doug shoots n00b in the head -

FPS Doug: BOOM, HEADSHOT! TAKE THAT N00B!!!

Lucy Booming

The combination of LSD and psychedelic Mushrooms taken in one setting.

A friend of yours is tripping. They are "Candy Flipping", or rolling on MDMA combined with LSD. A second friend of yours is "Hippy Flipping", which is a combination of Magic or psychedelic Mushrooms and MDMA. You, on the other hand, are "Lucy Booming", which would be LSD and psychedelic mushrooms taken at one time.

Boom Bappin

makin beats with the MPC 2000

J-Dog was Boom Bappin on the drum machine today.

vine boom

Literally every sound 99% of vines and shitposts make.

Example 1:
"Das why yo shoes raggedy"
"Das why yo mama dead
VINE BOOM
"Dead as hell"

Example 2:
"AYO THE PIZZA HERE"
A person, presumably black, trips down stairs attempting to get the pizza, followed by 3 vine booms.
"AH MY EARS BURN"