I couldn't imagine flying an aircraft stoned, just too much shit goin' on. So when I fly, I'm sober.

And just to clear things up, it is perfectly legal to be stoned in public as long as you aren't in posession of anything drug related (at least in Cali). So if you feel like it, you can get baked out of your mind and walk into a police station and chop it up with pigs and they can't do shit.