After a relationship break up, there is a caving in between the two, mend the relationship, find a solution with arguments, texts, photos, videos, swearing, leverage, until they get together. Repeating the cycle.
Amy: " Omg have you seen Jessica's ass? Like I get she is trying to be a skinny queen but she literally has a concave ass!"
Emmy: "A what?"
Amy: "A concave ass yanno it's soo flatt it just reverts back into her body"
Emmy: "Oh gotchu she out skinnied the rest of us"
Female genitalia. Ussually belonging to the chick who lives with four frat boys and isn't overly offended by the constant mangled vagina, donkey fluffing, or XTREME(yes, you have to pronounce it with enthusiasm) hand-job references. Also may have mastered the art of vagina shadow puppets.