this is when two females engage in performing the act of running at each other, and jumping from about one meter and a half apart while trying to cause the clitoris or other parts of the vagina to connect in a sexually satisfying way

Let me die.

When two lesbians get together for some action and rub their vagina's together. IE: The lady's clams have a good old tussle

is when two women who participate in the Medieval sport of jousting, utilizing their vaginas in places of the lances (jousting rods).