Norman Gimbel and Charles Fox's iconic Happy Days theme has been sexed up for a new porn film based on the hit TV series.

The beloved TV theme is now peppered with sexual innuendos and saucy terms for new DVD This Ain't Happy Days XXX.

The new lyrics over the popular tune are: "One girl Sunday, Happy Days/Two girl Tuesday, Happy Days/Threesome Friday, Happy Days/The chicks are fine, they'll blow your mind/they're ready to jump on you." And, "Goodbye good girl, hello wh#$% / you're giving it up then you beg for more... These girls have one thing on their mind, Happy Days."

In the Axel Braun film, lusty teenagers Ralph Malph, Potsie and Richie Cunningham turn to Fonzie, played by X-rated movie veteran Tommy Gunn, for graphic sex advice.

The TV show's sets are recreated perfectly for the saucy new film - as is the popular series' familiar pre-show announcement: "This Ain't Happy Days XXX was filmed in front of a live masturbating audience."

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(This news article provided by World Entertainment News Network)