(n)Any unidentified and undesirable substance, often crusted onto something you'd otherwise like
to wear or sit on. Often found on second (or third or fourth) hand couches or thrift store
(v)When someone screws something up, often in a half-assed manner.
Hey, man, I like your new jean-jacket, but what's that gunk on the sleeve?
out on my friend's couch after the party, I woke up to find
my drool had coagulated with
some gunk on the cushion.
Todd was supposed to mail the rent, but he gunked it, now we have
a late fee. Way, to go, TODD!