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4.
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. But the Child Protection Act of 1966 made M-80s and cherry bombs illegal to manufacture in the United State
I blew my finger off playing with an M-80.
by Paisa July 01, 2005
 
1.
A small cylindrical explosive device containing potassium perchlorate and aluminum, used to make lots of noise or destroy small objects.
Here's an M-80, let's blow this shit up!!
by Everyzig2101 December 23, 2003
 
2.
A side fused illegal firecracker/salute.
Usally contains 3grams of flashpowder.
M-80s go boom................
by Bleh July 28, 2004
 
3.
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.
by Swedishhotpocket September 25, 2008
 
5.
An explosive firework. Was sold in the United States until the Child Protection Act banned them in 1966 because of the large amount of injuries due to mishandling or stupidity. An M-80 is usually about 1-1/2" x 9/16" with the inside of the tube filled with flash powder. One M-80 can easily remove fingers or send particles into the eyes causing permanent blindness.
"Dude, did you see that M-80 go off? It blew apart that entire mailbox!"

"I know I don't have a hand anymore, I lit an M-80 in my hand and it just blew it clean off. I would give you the finger but I have none left."
by Jack the Anarchist April 05, 2006
 
6.
a firecracker that kicks ass. until some dumbass kids blew their fingers off, now they're illegal. thanks for ruining it for the rest of us, dumbasses
m-80's are fun to blow up dog poo with
by cream of sumyungay September 11, 2005
 
7.
Explosive device used by the residents of Alabama to remove their own hands.
After I finish my Pabst, I stepped out of the trailer and watched my brother/father blow his hand off with an m-80
by sarcomax July 30, 2003