m-80 

A big ass illegal firecracker/quarter stick of dynamite.Used by the army as simulation grenades for training, but some ordinary people wanted them to play with so they stared selling them at stores, until people started blowing there hands off. Now there illegal.

"Could easily blow up an ordinary mail box, but dont do that cuz that is a very big federal offense."

m-80 by zack--~KAZ~-- July 21, 2005

M-80 

M-80s were invented by the military long ago to simulate grenade explosions during training missions. Soon they became extremely popular with the public, and were sold as large firecrackers. legal firecrackers may only have 50 miligrams in them, but M-80s have about 3 grams each, making them incredibly dangerous and capable of blowing up an entire hand.

"Dude, I just crammed an M-80 in some guy's mailbox, and it blew up so badly."

M-80 by The Bass Of Spades May 30, 2006

M-80 

Not as cool as taking seran wrap pouring gun powder inside and wrapping it nice and tight with electrical tape, poking a hole in with a nail and sticking a fuse down so it touches the gun powder.

That Shit go MORE boom!!!

M-80 by sloppycory September 4, 2005

M-80 

A step up from a cherry bomb but not nearly as cool as a co2

I threw an M-80 at that preppie and blew his leg open

M-80 by cotton hill(killed 50 men) March 21, 2003

M-80 

that mini stick of dynamite you always play with as kids that was the cause of your buddies 3 missing fingers.

"Hey Tim, you remember that old gag where we'd light an m-80 and flush it down the toilet?"

M-80 by Johnny Rebel For President November 29, 2017

m80

Internet lingo for "matey", a slang word for friend. Not to be confused for a firework.

"Here's that firework video you requested"
"thx m80"
"No they're just roman candles"
"u wot m80"
"Uh, no M-80's. Did you get the right video?"
"fo sho m80"
"...Okay whatever"

m80 by poopybottoms May 16, 2014

M80

A type of firecracker that is quite effective in bothering local neighbors, family pets and of course, senior citizens.

After Doug lit an M80 on the back porch, Mr. Jenkins was in need of a new pair of underpants.

M80 by Swedishhotpocket January 13, 2009