the police are often referred to as heat, some people call it "bringing the heat" to be noticed by police. This phrase is usually used in a drug deal situation, and someone who is considered a heaty or heat score is an undesirable customer. Also used to describe situations where you are attempting to avoid detection in your dealings, and a police/authority figure gets close...this is a heat score
Throwing a bottle of Buckfast out of the window onto the street, narrowly avoiding getting you and all your friends arrested.
"THD, you were such a heat score last night"