Love locket
A love locket is a vagina. It is called this because it should be LOCKed until two people fall in love and can cum together as one. Plus, the two people are facing each other when they do it, kinda like they would when the locket is closed, so it makes a lot of sense.
Guy: Hey, can I enter your love locket?
Girl: Yes of course because I love you!
Guy: Suuuuuhweeet! <3
Girl: Yes of course because I love you!
Guy: Suuuuuhweeet! <3