When two men use one arm each to fist a woman. The techiqnue requires one man to use his left arm and the other to use his right. Both fists are put back to back and pushed into the vagina, the idea is to seperate the two fists away from each other inside the woman so each arm resembles the neck of a swan.

Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)