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.