You don't care if you're a dog. The whiskey's given you courage to finally do what you've always wanted.
Jack's zipper is hard to manipulate with your partially changed hands, but you manage it. His pants go down and so do his "money" printed boxers. Then, there it is.
L'il' Jack. You stick your nose in his crotch and suck in the scent. You feel warmer and more content than when you drank that whiskey.
As you lick his limp dick, your nose grows, turns black, and dog whiskers grow out of your gray dog fur beard. His dick gradually turns harder and harder. Your face pushes out into a dog's muzzle and your tongue grows longer and longer. Fangs line your mouth, but you don't bite down - you're very, very gentle with his hard penis. You take it wholly into your muzzle and extend your tongue past the base of his penis to lick at his balls as you suck, suck, suck.
Jack moans in his sleep.
None of this is right - him changing you, you sucking him off while he's asleep, doing all this in public... It's about 3 am and no one's around, but right there in the street, you're licking him until he comes... and there he goes. The hot salty stuff goes into your mouth and you swallow it down.