Frak is a fictional version of "fuck" first used (with the spelling "frack") in the original Battlestar Galactica series. It continues to be used throughout different versions of the franchise as an expletive. There are other uses, however: companies have adopted it as the name for commercial products, notably a computer game. 'Frak' is a fictional version of "fuck" first used (with the spelling "frack") in the original Battlestar Galactica series. In the "re-imagined" version, and subsequently in Caprica, it appears with greater frequency and with the revised spelling "frak", as the producers wanted to make it a four-letter word. In that framework it seems to function as a substitute for "fuck" in several different forms, as an interjection ("Frak!"), inquisitive idiom ("What the frak?"), verb ("You're not still frakking Dualla, are you?"), adverb ("You frakking crazy idiot!"), a noun ("You miserable frak"), ("A good frak"), (to Starbuck "I guess a pity frak is out of the question") or in compound words ("What a clusterfrak."), ("Motherfrakker!"), or as almost every word in a sentence ("frak the frakking frakkers."). In the "Back From The Future" episode of 21 Jump Street (Season 4, Episode 16) Officer John Cogan utters "Oh Frak, this duty sucks" in the opening scene. In the show The Big Bang Theory when Penny asks for Sheldon's help in front of Leonard, Raj, and Howard, the verbal response from Howard was "What the Frak," which allegedly was a reference to Battlestar Galactica due to the sci-fi geek nature of the television series. In the cartoon movie "Planet Hulk" Android says "Oh Frak," right before being killed in the first coliseum fight. In the video game Destroy All Humans! 2, the character of Orthopox utters the word "Frak!" in a side job where he attempts to contact his homeworld, from which he is denied help when he tells them the mothership was destroyed. When the player-controlled character Cryptosporidium asks him about "Frak", Orthopox states it is "an ancient Cylon curse word." "Frak!" was the title of a popular game released on the BBC Micro B and Acorn Electron, and later the Commodore 64. The game saw the user controlling a caveman called Trogg, who had to navigate various maze-like scenarios and dispose of various deadly obstacles with his yo-yo. When coming into contact with such an obstacle or falling a substantial distance, Trogg would cry "Frak!" (via a speech balloon that appeared over his head) before the user restarting the level. Bearing in mind the character utters this phrase as he meets his death, it presumably is used as an alternative for "fuck". "Frak" is used in the same sense as in Battlestar by characters in the early 21st century "Ciaphas Cain" series of Games Workshop Warhammer 40,000 novels by Sandy Mitchell, probably like an expression from the character's unknown birth world. FrÃƒÂ¤ck (spelled with the umlaut 'ÃƒÂ¤') is also the product name of a shaving mirror produced by IKEA, a multinational home products retailer. Most IKEA product names are in Swedish, and frÃƒÂ¤ck is the Swedish word for audacious, shameless or bold (while frack, without ÃƒÂ¤, would translate to tailcoat). In the re-imagined Battlestar Galactica series, a mirror of this type is installed in the cabin of William Adama. Frack has also been used as a descriptive name for a large backside (buttocks). This can be either derogatory or complimentary.