Originally Posted by Pipe&Cigar

When your mouth is closed move your tongue back (similar to when you swallow) while exhaling through your nose (Croatan's "make a small sound in the back of your throat" is a great one, I had never heard that). Your tongue will move the remaining smoke that is inside your Oral cavity back to your throat and carry it out your nose with the other exhaled air from your lungs.... easier than this sounds!