1. Type of bomb, characterized by a loud, shrill screaming sound.
2. A type of firework, also characterized by a loud, shrill screaming sound.
3. A term used to convey how frightened you are. Commonly used in place of, or along with:
Heebie Jeebies
Booboo Jeebies
Quiver Shivers
Hoohaa Quivers
Shaky Shivers
and Scooby shivers (named for the shaking that the cartoon character Scooby Doo is prone to do when frightened)
Also, used in place of shorter terms, such as:
Creeps
Shivers
or shakes
"To get rid of the enemy, screaming meemies were used to destroy the area."
"The screaming meemies were so loud that they made my ears ring."
A very harsh case of diarrhea where one will sit on a toilet for an extended period of time while what feels like flames shoot out of one's rectum, esp. after eating exceptionally spicy food.
Dude 1: Where's Steve, I haven't seen him since yesterday.
Dude 2: He's probably sitting on the john with a case of The Screamin' Meanies.