Two trolls walk into a tavern and order grog.
Suddenly, an elf lady at a nearby table, who is eating cheese, begins to cough. (probably shock at seeing the trolls)
After a minute or so, it becomes apparent that she is in real distress. One of the trolls looks at her and says, Kin ya swallar?' (this is how hill trolls speak, of course)
The elf shakes her head no.
The troll asks, 'Kin ya breathe?'
The elf begins to turn blue, and shakes her head no.
The troll walks over to the elf and much to her shock, lifts up her dress, yanks down her drawers, and quickly gives her right butt cheek a lick with his tongue.
The elf is so shocked that she has a violent spasm, and the obstruction flies out of her mouth.
As she begins to breathe again, the troll walks slowly back to his table. His partner says, 'Ya know, I'd heerd of that there 'Hind Lick Maneuver' but I ain't niver seed nobody do it!'