Harmonica joint 

A certain of joint-rolling called a "flaming backflip" (you can look this up anywhere) cuts a hole along the paper, so you must inhale through the hole instead of through the roach. The result looks as though the smoker is playing a harmonica

try to roll a flaming backflip. it will probably turn into a harmonica joint. you tube the flaming backflip.

Harmonica joint by lost1516 December 18, 2011