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1.
old format from the 70's. Famous for it's failure, it's price, it's quality, and porno.
Let's go watch betamax porn!
by Franklin W. Dickson October 21, 2009
 
2.
Used to describe the process by which technology is overtaken in the market by inferior but better marketed competition.
Microsoft betamaxed Apple right out of the market!
by Johnny Thirteen August 11, 2007
 
3.
most sexy and attractive man on the world, he is so betamax (karsten)
karsten so amazing everybody wants his d, because he is so betamax
by KetaKarsten May 03, 2013
 
4.
Finished software so maxed out with bugs it should still be beta.
Most of those new Apple Dashboard Widgets are so betamax.
by Richard Feder July 22, 2005