A grenade that upon triggering it releases large amounts of foam. It was introduced in the movie "Doomsday" (2008), which enables the user to softly land a falling elevator shaft.
by Jesusonline January 3, 2010

Sally was fighting with her boyfriend for the final time. She could no longer handle the fact that he liked to watch Mr. Rogers during lovemaking. Right after they had sex she told him it was over and proceeded to leave a grenade pin under his pillow so that he would find it weeks later. Or soonder depending upon the smell factor.
by pbrgirl September 23, 2005

Step One: Steal your friends phone and run into the other room(don't let them know)
Step Two: Go into their contacts and pick someone embarrassing
Step Three: While it's ringing, run to your friend and hand them their phone.
This will cause them to act like an idiot while they try to answer their phone, or if no one answers, while the person calls your friend back and has to explain what happened.
Step Two: Go into their contacts and pick someone embarrassing
Step Three: While it's ringing, run to your friend and hand them their phone.
This will cause them to act like an idiot while they try to answer their phone, or if no one answers, while the person calls your friend back and has to explain what happened.
by ¡Kellen! January 20, 2009

Verb - To convince friends to come over to your computer while looking up old classmates on Facebook. Then you leave a grenade. After leaving a "grenade" also known as deadly fart, your friends start throwing up everywhere
I was on Facebook after drinking and smoking looking up Angelo Portale while shitting my pants, I left The Facebook Grenade behind, I called my friends over and when they dashed over, (comma) they inhaled through their nose my noxious gas I left lingering in the air.
by John Amsterdam December 27, 2009

Drill Sergeant to Recruit: "Private, what happened to your uniform?! You look like you jumped on a wrinkle grenade!"
by Sgt Redleg July 30, 2009

a sticker of a grenade usually put on a car window to advertise a willingness to homosexual activity
by stupid ricer November 27, 2011

Frank: You should really read this book. It's amazing, he tells you all this stuff and it's like a mind grenade.
by atwig December 22, 2008
