When you turn the vagina into your own personal Russian buffet and substituting Russian foods for taco ingredients. You do so by opening the vagina and first inserting pelmeni (meat dumplings) in place of beef or chicken in an actual taco. Then on top of it you pour vegetarian borscht to replace any forms of vegetables you might put in your taco. Finally you pour Vodka sauce (even though it is an Italian sauce it still contains Vodka) on top to symbolize the cheese sauce. Once this meal is prepared you go forth by eating out the woman, pleasuring her and filing your stomach.
Vladimir and his girlfriend were looking for something to do on their Saturday evening, so instead of going out to dinner, Vladimir made a Russian Taco out of his girlfriend's snatch.