Bollocks
"Bollocks" is a word meaning testicles in British English. The word is often used figuratively, or as an expletive following a minor accident or misfortune, but also in a number of other ways; as an adjective to mean "poor quality" or "useless", also as an adjective to mean "top quality" or "perfection" (e.g. that bike is the dogs bollocks). I found a Google search aptly named VW Bollocks. I thought it might be pictures of testicles displayed in RedClouds but alas, it had to do with the automobile. It is actually a very funny advertisement. Check it out at http://www.kontraband.com/show/show.asp?ID=966&rtn=index-alltimetopten.
Perhaps the best-known international use of the term in this sense is in the title of a Sex Pistols album. Testimony in a resulting lawsuit over the "obscene" term demonstrated that in Old English the word referred to a priest, and could also be used to mean "nonsense" (see "Never Mind the Bollocks, Here's the Sex Pistols" for details).
Bollocks! can be used as a standalone interjection to express strong disagreement. This usage is closely related to the above; it dismisses a statement as nonsense, similar to bullshit in the US. This can be expanded, for example, to "What a complete and utter load of bollocks!".