In a heated beach volleyball match, LMU hit a killer shot to looked like it won the match for LMU so the LMU fans went wild, but Kat had an amazing one-armed dig to pop the ball over for the point against LMU, who was already celebrating their victory. The LMU team lost the point during their premacheer
noun: a loud cheer ejaculated loudly and involuntarily during a sporting event when one thinks his or her team gained some ground, when it really was a play that favored the other team.
Sitting in the Brazil section of the futbol staduim, Jose emitted a premacheer ejaculation thinking his team's goalie had made the save, when the ball had actually rolled in. The other Brazil fans beat him up for his mistake.
The act of spunking over yourself, when you climax earlier than anticipated whilst watching online porn, causing you to fall backwards off of your chair.
He was careful about masturbating in his bedroom since the occasion when he suffered from premachair ejaculation, and struck his head on the floor.