It's A Habit

"If I'm in a restaurant and I'm eating, and someone says, `hey, 
mind if I smoke?', I say, `uh, no.  Do you mind if I fart?'  
It's one of my habits.  They've got a special section for me on 
airplanes now.  I quit once for  a year, you know.  But I gained 
a lot of weight.  It's hard to quit.  After sex, I really have 
the urge to light one up."       
-- Steve Martin