A namesake friend; someone, often a complete stranger whom you might never have met in person, with whom you chat online, when you feel bored and have nothing better to do.
I have tons of chatmates on Whatsapp and WeChat. Even though I haven't met any of them, some of them have become very close to me. Actually, they give my life a new purpose - now, I don't even care if I have any traditional brick and mortar buddies. Yes, I know there could be some risk: who knows if my chatmates are mere bots.
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.