I used to have a siamese, Dashiell Hammett, that would attach his lips to one of mine during love time, and wouldn't let go. He'd rub his mouth back and forth as if people kissing and purr for several minutes and if I moved my head away, he'd just creep over my chest and re-attach his lips to one of mine... I always itched around my chin and lips from, I guess, the saliva and the short hairs of his chin scritching back and forth... This was a ritual his whole life (14 years)! (And not to open a new topic, but imagine my dismay when my boss chastised me for being "a cat lady" when I took off the weekend my Dash died...---another day!!!).
I kiss Scamp on the lips cuz he sits in front of me and waits for it! No one else wants it (Shy likes rubbing the sides of her mouth along mine but not really to kiss, just wipe and purr!)