I didn't read it as "stole the bulb from your streetlight"... but "I stood under it and used the light, and BLOCKED THAT LIGHT from reaching the sidewalk bwahaha, I have STOLEN YOUR LIGHT..."

(OTOH, someone was busted for "stealing" wireless internet from a library that didn't bother to turn it off at night... he parked in the parking lot and connected from there. I didn't hear whether he was convicted, nor on what charge he was held.)