by Morbidpete October 12, 2018

by JACOB30475 July 31, 2018

by blazemonkey June 6, 2019

When you post a comment on a youtube video, usually of a popular musical artist, leaving an unflattering comment and expecting to argue with many fans of the video/artist in the future.
"Man, I tossed a youtube grenade yesterday leaving a comment on that Taylor Swift video. All I said was that her singing was terrible and instantly I my inbox was flooded with people insulting me."
by MarcoGTR April 4, 2012

Example of a Tweet Grenade:
@company is giving away a free kitten, retweet for your chance to win! #company
@company is giving away a free kitten, retweet for your chance to win! #company
by Kennedy's Garage August 10, 2010

"My wife said lets eat some food at the street fair" and I replied "Yeah, sure lets just eat some ass-grenades!"
by lolafartz October 28, 2011

When an employee of a firm uses some flimsy excuse to repeatedly touch or squeeze a colleagues chest (pecs or boobs), and the colleague then deliberates whether to sue the firm for sexual harassment at a time that suits them best.
You know, if they jerk me around one more time at work, or threaten to lay me off, I'm going to lob that tit-grenade Kathy gave me into the meeting with HR.
by The Mighty Bood February 9, 2019
