What is Jinxster?
1.
The guy you blame for causing a loss in a sports game you should have won because:
1) He/she openly disrespected abilities of the enemy stud
2) He/she had a victory party planned before the game
3) He/she sends out an email to the office/home before the
event applauding victory
"Dave's email telling us to meet as his room after the game before it even started is why we lost! He's such a jinxster!"
See