When someone is giving a blowjob and they tuck their teeth behind their lips, making their face look like an old lady with no teeth, gummin' your dick around her mouth.
She's hot, but she gave me the old lady thin lip on my tip.
Something that primary schoolkids say to insult each other, or give a really bad backhanded compliment. Together, the first letters of each word equal “COOL”.
It's a bird! It's a plane! It's Politically-Correct Old Lady! Born to fight justice while knitting at the same time. Gaze as she catches the bus! Stutter as she solves cross-word puzzles!