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.
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