Bob: Hey, can I masticate here?
Joe: Sure, I'll watch you masticate.
Bob: I love mastication, and doing it with a friend is even better Joe: Now I want to masticate...
Sarah: Hey Marty I brought you home a cheeseburger.
Marty: Oh, I bet it’s been a VERY VERY BAD burger!
While engaging is sado-mastication, Marty proceeds to pimp slap and punch the helpless cheeseburger before taking a bite and then makes sounds of delight, achieving some sort of sick thrill from this!
The skill of being able to detect a foreign item in your mouth, notably when found in food, and to manipulate it with the tongue, teeth and lips to eject it alone.
Adept manipulo-masticators compete by having meals together of food that has deliberately been adulterated with hair, small stones, pieces of pith, etc. The winner is the one who has collected the most items.
"When you spit at people, it's cool to have sufficient powers of manipulo-mastication to retain your chewing gum."