Noun: A cat's tail when it gets scared or mad. The larger the tail, the more pissed off he is. One can also measure the state of the pissometer by how long it takes for the tail to get back to it's normal size.
A meter to define or measure a cuss word's effect on the general public and or anyone who may use it. A means to determine what words are generally acceptable and what words should not be used in a conversation. Ever.