Rusty Grenade 

The act of defecating and ejaculating into the the palm of ones hand and tossing it over an object (e.g. a book) into the unsuspecting mouth of the target.

I gave Daniel a rusty grenade today while we were playing magic cards. I won the game.

Rusty Grenade by Daniel07 October 29, 2011

smoke-grenade 

A one night stand that you meet using the website Plenty of Fish (POF). The origin of this term comes from the similarities between the sound of a smoke-grenade (poffff) and the acronym POF. Also, a one night stand is expected to clear out in a relatively short amount of time, much like a smoke-grenade.

"Hey bro, what are you doing tonight?"
"Not much man. I'm about to go meet up with this smoke-grenade I've been talking too."

smoke-grenade by skwarekneedles September 27, 2013

Jumping on the grenade 

A term used when a wingman takes the ugly girl interested in you, leaving you open to swoop in for her more attractive friend.

Me: Her friend is so hot, but the ugly girl is into me
Wingman: I'll take her off your hands so you can try the hot girl
Me: Thanks for jumping on the grenade, man. I owe you.

Jumping on the grenade by Knowlton School ofArchitecture March 5, 2015

phone grenade 

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.

Kellen- phone grenade!
Bill- uh,uh,uh what?

phone grenade by ¡Kellen! January 20, 2009

Wrinkle Grenade 

Military term for an object which causes a person's clothes or appearance to be slovenly or unkept.

Drill Sergeant to Recruit: "Private, what happened to your uniform?! You look like you jumped on a wrinkle grenade!"

Wrinkle Grenade by Sgt Redleg July 30, 2009

Reverse Hand Grenade

Slide your fist into someone's asshole and spread all your fingers out all at once.

Much like the regular hand grenade, but instead of using a vagina, you are using an ass hole.

"Did you hand grenade that chick last night?"
"No, but I did do a reverse hand grenade!"

Reverse Hand Grenade by muffinhasmypants April 19, 2009

The Facebook Grenade 

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.

The Facebook Grenade by John Amsterdam December 27, 2009