The act of someone entering your personal space while you are seated and resting their package on your arm or shoulder. This is generally a habitual act by the offender and causes discomfort for the victim. This act may be done inadvertently or to show affection.

v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)

A cockarm is what you would refer to the arm from which you masturbate with.

A man who thinks he has big arms but in reality they have long, skinny, penis-looking arms.

an abnormality where your arm is a huge penis

A person, generally male, who has either a dysfunctional penis or mad crazy arms. Sometimes the poor dude has both, in which case I'm glad I'm not him.