jag master 

one who screws up at the worst possible time.

did you see jason kidd lose the ball off his foot??
yup. jag master.

jag master by 2014_chiguy December 9, 2006

DJ= Digital Jammaster 

DJ was once known as a Disc Jockey, but now we are in a digital Era and the name needed to be updated so behold to the revolution of Digital Jammasters.

Digital Jammaster Jam master DJ= Digital Jammaster

DJ= Digital Jammaster by Spunkerzzzzzzzz1992 November 29, 2011

jagmaster 3000

one bad ass mother fucker that gets more than enough pussy

yo, wuzzup jagmaster 3000, how was dat bitch you tore up last night?

jagmaster 3000 by shadowdick July 24, 2011

JayMaster 

Someone who loves video games has autism but still likes to play gets bullied by his friends but is really smart and dumb makes jokes that are not funny and has little to no talent thinks he is good at things says he is the best for jokes but sucks all because of his autism but somehow still keeps to maintain his friends

The JayMaster who
Thought the gernade was a disco bomb from fortnite was thrown into the class and killed 23 kids

JayMaster by VideoGameGoblin23 July 26, 2019

JogMaster 

The brand of treadmill most notably used by Ralph Drabble.

June: "Hey Ralph, wanna run on the JogMaster with me?"

Ralph: "Sure, let's hustle!"

June: "Whatever you do don't let me bother you!"

Ralph: "This is great it's really burning me!!"

JogMaster by Dusty's Baby Powder September 9, 2010