A warning signal which is made by placing a sock over the doorknob of a bedroom door. This signifies to a roommate that you are inside the bedroom, engaged in sexual behavior.
I was headed into my bedroom to grab my wallet, but I stopped when I saw the doorsock and I knew my roommate was inside banging his girlfriend.
The act of inserting icecubes in ones partners anus then having anal sex. The icecubes are for pleasuring both partners. The ice is supposed to numb the anus for the receiver making it more comfortable and less painful.
I first heard it on the Bubba The Love SpongeShow.
Marsha: Greg told me he wanted anal sex again, and I told him no because it hurt the last time.
Jan: Well what did do?
Marsha: He suggested putting icecubes in my..... poop-shoot! He called it a Syberian Doorknocker!
Jan: Well did ya'll do it?
Marsha: Fuck yeah. I had an assgasm and I was numb all inside.
A person who walks up to a business before (or after) hours where the business hours are clearly displayed and proceeds to grab the handle and attempt to open the door forcefully.
Every morning there is at least one "Doorshaker" waiting outside my business.