Pitty Puff 

Sacrificial oral gratification in public.

One may feel sorry for a lonely individual in a bar setting resulting in a pitty puff

Pitty Puff by MelRed September 10, 2011

Pity puff 

The pity puff is the last toke of a joint. It is presented to the next person in the circle as a consolation offer. Usually it is the least tasteful part of the joint and also the hottest part to smoke. It is therefore offered as a "pity" toke, or "puff".

"There were too many people smoking on one joint, all I got was the pity puff."

Pity puff by CrazyEef August 22, 2012

Pittypuff 

When your friend brings over inferior weed but you still smoke it so as not to be rude.

Clint's weed wasn't very good but you know I had to pittypuff it.

Pittypuff by stingypuma September 3, 2013