Best pronounced "Boooooooooooooooom" followed by an Ali G-esque finger snap.
Can also replace the phrases "I emphatically agree" or "Thats the best news I heard for ages"
"Mate, I've just won the lottery"
Just quit my job... Boom.
Brah 2: Yeah brah, but we need to get some more Beast first.
Brah 3: Alright, let's head to the Deli.
2. When someone does something good, great or amazing.
3. When someone says something good, great or amazing.
Boy smashes a window - "Yeah dats boom"
"Let's go down the park and get some cider" "Yeah boom"