The thing that's ready to bear all your boogers no matter how boogerily boogery they are.

when you're hungover as shit after a spending a night drunk as a skunk

Preferred hygiene product used by women (and presumably men) after intercourse, resulting from intra-vaginal or intra-anal climax, to prevent unnecessarily soiling bed-sheets/couch/carpet/upholstery/car-seat with the deposited ejaculate, which may subsequently trickle onto said fuck spots.
Convenient, cheap, quick and absorbent, the Kleenex is the ideal way to prevent nasty love juice stains.

Synonyms: Snot rag, hanky, handkerchief, tissue

A popular brand of tissue. Favoured by those going to a snot party

The Kleenex is a small napkin used for many purposes, almost anything can be accomplished with the napkin. You can clean up, or mess up, with the Kleenex. One very important purpose of the Kleenex is wiping up cum or jizz. This can be one of the most efficient ways of cleaning the sticky substance.

Insulting word for a girl you use for sex once then get rid of, like a used paper tissue.

Also see Kleenex fuck and fuck 'n' chuck