I'm gonna pump, pump, pump it up 'Til my muscles ache, you get in shape I'm gonna pump, pump, pump it up Let's me get what I want when I want it, when I want it Twenty, forty, sixty, eighty pounds Press, press, press I'm gonna show them clowns I'm gonna prove it to them, I'm gonna prove it to me Pumping these muscles is what we all need Pumping these muscles is what we need I'm gonna pump, pump, pump it up 'Til my muscles ache, you get in shape I'm gonna pump, pump, pump it up Let's me get what I want when I want it, when I want it