Mom closed the door and took the chain off and let them in. They brought me in and Mom gave the three of us one of her looks.
"What's this about?"
Booger pointed at me. "We wanted to ask your son some routine questions about his movements, but he declined to answer them. We felt it might be best to bring him here."
"Is he under arrest?" Mom's accent was coming on strong. Good old Mom.
"Are you a United States citizen, ma'am?" Zit said.
She gave him a look that could have stripped paint. "I shore am, hyuck," she said, in a broad southern accent. "Am I under arrest?"
The two cops exchanged a look.
Zit took the fore. "We seem to have gotten off to a bad start. We identified your son as someone with a nonstandard public transit usage pattern, as part of a new pro-active enforcement program. When we spot people whose travels are unusual, or that match a suspicious profile, we investigate further."
"Wait," Mom said. "How do you know how my son uses the Muni?"
"The Fast Pass," he said. "It tracks voyages."