Another reference to when two dudes try to stuff both of their man meat into a chick's pussy. I'm not sure where the origin came from, but I heard the term used on Eminem's response to Mariah Carey's "Obsessed".
"...When me and Luis were tryin to stick two CD's in the same slot."
Occam's shit stick is the opposite of Occam's razor. Occam's shit stick is when a conventional explanation of something seems complicated and to explain away perceived inconsistencies one come's up with an even more complicated explanation which is filled with even more (usually profound) inconsistencies.
The "That's Fricken Sick"also known as #TFS is a hand gesture and saying used only by the sickest people. It is displayed easily, you do a thumbs up and throw it down into basically a Shaka or the "Hang Loose" sign, but with your thumb bent downwards at the knuckle. Accompanied by the phrase"That's Fricken... SICK!"
"Did you see Thad shotgun that beer?! That's fricken sick!"
OR
My dad said he loves me! That's fricken sick!
While hitting itfrom the back, the man inserts a doritos dynamite stick directly into the females asshole. He then lights the stick and continues fucking while yelling "aye carumba"