Based on the legal code, around here it's slang for "crazy". Poster: "I was ripping my dirt bike out in the snow and got pulled over!" Commenter 1: "What for?

Based on the legal code, around here it's slang for "crazy". Poster: "I was ripping my dirt bike out in the snow and got pulled over!" Commenter 1: "What for?" Commenter 2: "5150." Barcroft Station in California (elevation 3800 m) has house number 5150 over the door. You'd have to be crazy to want to work there.