A Kitty Sanchez is when a cat licks his crinkle and then licks someone's upper lip, leaving a crinkle surprise.

It's the sweat that accumilates under big boobs

When Your girlfriend is giving you head and fingering your ass, then she comes up to kiss you and wipes her finger from your as on your upper lip

The act of wiping cat poo on your lover's upper lip. Derived from dirty sanchez.