You know you're a stoner when..

[Ganj]

when you finish a bowl, light a cigarette, then turn around and light another cig while the first one is burning in the ash tray.
or maybe that's a nicotine addict.

haha! or when you reach in your pack to pull out another cigarette when you already have one behind your ear. i call it the surprise cigarette...well, just now i did.