Someone (usually a BFF) that helps drive away a guy who can't take a hint. A person you've asked in advance to play cock block so you don't have to hurt someone's feelings or pity fuck them.
*reverse wingman
*premeditated cock-block
"Since, Jeff's bringing my phone charger later, I'm watching your kid tonight, Suzanne. He surely won't try to fuck me while I'm holding a newborn. Your baby is going to be the best dick-shield ever."
Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically don't take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.
Person 1: Damn, Dustin already has a new girlfriend?! It's only been two weeks since he broke up with his fiance! I think he's a sociopath.
Someone or something that bites your ankles.
To a postman, an ankle biter is often known as a dog.
To an adult, an ankle biter may be a toddler.
To hikers, an ankle biter is sometimes a tick.
And so on.