A very, VERY casual sexual relationship. Generally noncommittal.
"So are you guys together now or what?"
"Oh hell no, it's just a filationship."
A state of being, replete with personality tendencies so incredibly vile and off-putting that there is simply no other term for their level of social communication. A complete lack of anything even remotely resembling a clinical attitude (even a negative one).
"Bro, gimme a drink."
"Excuse me?"
"I SAID gimme a DRINK. It's fuckin' HOT."
"Dude, you need to check your asstitude at the door."
Codeword for anal intercourse. So named due the excuse often used by the perpetrator (it slipped!)
"I was pounding her so hard I decided to try and get away with a little slipdick."