On Cops and Rock Collecting

I just saw an episode of Cops where this cop stops a homeless man walking around in a residential neighborhood. The homeless man seemed nice enough. The cop searched his bag and found some unused needles and a bunch of rocks. Actual rocks. The homeless guy collected rocks as he walked around. The cop let the guy go because he didn't have any drugs on him, and he gave him his rocks back.

I always wanted to collect rocks. The ones I liked best were tiger's eyes.