who's never shotgunned a beer. >> shotgunning a beer when is you're basically breaking into the bottom of a can, and then you're drinking from that hole. >> reporter: once the partners settled on what to build, they had to figure out how. >> we started calling people. >> reporter: the people they called for help were engineers, industrial designers, metal fabricators, and their parents. >> we both got a small investment from our dads. i think around $10,000. >> reporter: with all that help, the two created a sleek-looking, inexpensive product they eventually called the saber tooth. after graduation, they body got jobs in silicon valley. but quickly ditched those when they realized the saber tooth had some real teeth. >> this year we've grown almost 800%. it's been really great growth. >> reporter: they say it wasn't the product itself that caught fire, but the whole frat party brand, which they named raging mammoth. >> raging mom moth is all about having a great time. >> reporter: the saber tooth opened their eyes to an