By the way, the website Русский мат – Russian slang dictionary – Russisches Schimpfwörterbuch – Dictionnaire d’argot russe is another free online source with a Russian-to-English obscenity dictionary, and also includes French/Russian and German/Russian мат-tionaries, although these are shorter and less detailed than the Russ/Eng one. (Also, the creator of the site is a Frenchman who speaks English and Russian with fluency, but he is not a native носитель of either language.)

The "fake tourist phrasebook" is especially funny and can be appreciated even by your friends who don't know Russian at all (for instance, the jokes about cheap hotels and police who expect bribes are rather universal). Be aware, however, that the English translations are deliberately inexact and euphemistic and DO NOT reflect the true dirtiness of the Russian phrases (for example, "П*зд*ц, какой дубак!" is translated as "Blimey, it's freezing cold"!). But the not-totally-correct English translations seem to be done on purpose, to create a humorous "Hungarian Phrasebook" effect, and not because the author is incompetent.

Scroll down to the bottom of the phrasebook page for a humorous version of a very famous picture from the Pioneer space probes!