Someone who is so jazzed or excited about something that they can not contain themselves. Usually resulting in dancing or giving off high pitched shrieks of joy and excitement.
"Christine was so jazzersized for her friend's birthday party"
1-One whose considers masturbation and sex exercise.
2-One whose only form of exercise is masturbation and sex. However, few of these people ever have sex. Basically, a horny fat guy.
Guy 1: Why don't you exercise sometimes. Then maybe you could get some ass.
Fat guy: But masturbation is excercise.
Guy 2: Only for fat jizzercisers like you