Basically crack cocaine. You will lose your friends. You will lose your girl-friend. You may lose your job.
Friends: "dude when's the last time you went outside"
You: "I've been playing Rocket League. What day is it?"
You: "I've been playing Rocket League. What day is it?"
by Wietang-Clan June 27, 2016

When a male stuffs his erected penis and balls tightly between his thighs and has another person stare directly at both the penis and balls. It isn't considered a Rocket Booster until the Rocket Boostee' formally announces, "HEY, IT'S A ROCKET BOOSTER!"
Brett creeped up behind Ugly Bake and T-Wabes and announces ITS A ROCKET BOOSTER before getting bag-tagged
by WABEZ January 5, 2009

by RocketyangRacoon January 19, 2015

When a FIRST Robotics Competition robot singlehandedly fills the rocket in the 2019 game, DESTINATION: Deep Space presented by the Boeing Company
by MentorBuilt April 9, 2019

by Taki_Crumb May 17, 2020

Another word for the male genitalia, penis, cock, or shlong. Refereeing specifically to the penis when fully erect. The phrase comes from the word “mirth”, meaning happiness, joy or pleasure, when also combined with “rocket”. Mirth rocket directly translates to “pleasure rocket” which can be interpreted as a slang word for the erect penis.
by skitty April 24, 2008

A dude that busts his nut and explodes like a rocket just as he pushes past the rim of the pussy or ass. A one pump chump.
by Dick Onchin May 31, 2020
