a person with whom you are not closely familiar, but with whom you desperately want to have sex
"Hello, my little f*ckling. Let's take off our clothes and have sex NOW!"
"Hey, man. I've got this new f*ckling. Not sure what her name is though. She's in my molecular bio class."
A cibling is a term used for someone who is genetically your cousin but is like a brother or sister to you and is a fusion of the words cousin and sibling. It is a term of endearment that expresses great closeness to the recipient, in essence saying that the recipient is even closer than a cousin, but is like your own sibling.