The drawing of a penis on a car whose windows are frosted over. This event usually takes place after a winter night of drinking at a friends house, and upon leaving, drawing penises on neighbors frosty cars. the neighbors being none the wiser. It is ideal to use a knuckle rather than a finger as to not leave a fingerprint.
We were so drunk at Joe's house, when we left, we drew frostcocks all over his neighbors cars, unbeknownst to them...
An infection most commonly contracted after the completion of Frosh/Orientation/Welcome Week. Most commonly found in post secondary students. Notably vulnerable sub-populations include Freshman and Frosh Leaders. Symptoms include: Sore throat, lost voice, exhaustion, and the desire to cheer at strangers. It also increases susceptibility to real sickness
-"Do you have any idea where John is? He missed his first couple classes of the semester."
-"Oh ya he's at home sick, he came down with a badcase of froshococcus"