Classic cartoon characters are arrested and tried for a variety of offenses (drugs, bombings, etc.), but are almost always cleared in the end.
Courtroom officers carry guns, and prisoners are sometimes roughed up.
Some innuendo. In one episode, for example, the unpredictable Peanut says that he'd like "a taste of pubic hair."
Mild: "Damn," "idiot," etc.
Some characters are suspected of being under the influence.