Scritches Induced Narcolepsy

The dog ignores my proffered hand (palm in, knuckles curved and slightly relaxed, of course) and just sort of saunters by me, only to stop with his back to me, within touching distance.

"Oooooh, he dissed you!" his owner says, a little shocked. 

I, however, see the situation a little differently, and take the opportunity to reach out and scratch him right behind the ears, whereupon he sits down, and falls asleep sitting up while I continue to scratch.

"He falls asleep so much we call him 'Stinky, the narcoleptic piggy,'" his owner elaborates, and I smile.