Russian is simply a Titty F**K

Re: The origin of some of these Nation based terms

French = Whenever France is invaded or threatened, their troops drop to their knees and break out into spontaneous blowjobs on the invaders.  It's a well recognized medical condition that has yet been explained.

Greek = The Greeks have historically been known to indiscriminately stick their dicks into anything and everything, even the out door.

Russian = It's just too damned cold to get naked, so the guy just pulls down his fly and the girl just opens her shirt and then they do what comes natural.

In the future you won't have to wait for an answer to your post. The site is great for terms and acronyms you're not familiar with. Good luck

Asian -- Anilingus.
French -- Oral sex.
Italian -- Penis between butt cheeks.
Spanish (Australian) -- Penis between her breasts (also known as Russian).
Spanish (USA) -- Penis, finger or toy comes out of her ass, and goes directly into her mouth.
Eskimo -- She rubs your penis with her nose.

Alright, the last one was fake, but the others are directly out of the newbie manual.