Verb-The act of kissing one's ass AKA an ass kisser
"Boy that bitch is one saggy ass muncher."
Noun-Not to be confused with verb -The act of directly naming the person who is a saggy ass muncher.
"So and So Is a saggy ass muncher."
Sexual-The act of licking and biting a saggy
asshole , usualy preformed on milfs and
grandma's
"come here
Grandma I'm a saggy ass muncher and i wanna bite that saggy ass"