The Love Finger
The love finger is the sex act where a man (or woman) takes their ring finger and put it up the anus or vagina. Furthermore, the love finger is called the love finger because the ring finger connects to the heart.
xXxPussyCrusher420xXx: "So, bruh, how wus duuh secks lahst naaight?"

SlapDeeBuutee360: "Man, it was fucking amazing, grabbed a beer, took my ring finger, and gave her the Love Finger!"

xXxPussyCrusher420xXx: "Damn suun!"