"Aww, aren't the three of you cute" Mack says walking up to them, "Dumb as dogs though, so might as well make the forms match some."
Mack walks into the bathroom, pulling out a large bowl and filling it with water, bringing it back next to the bed, placing it on the floor.
The three Johns began to pant, quickly getting parched before jumping off the bed and sticking their tongues into the cold water, lapping it up as their bodies started to change again.
Each was changing in the exact same way at the same time, tongues getting longer as their noses darkened, face pushing out slightly as they lapped. Golden blond hairs began to grow sparsely across their bodies, their asses getting covered before tails began to push out atop them.
The water gone they sat, sniffing the air, smelling the changing scents of each other, reaching hairy, clawed hands down toward another's crotch, starting to stroke as their balls grew furry, foreskin slowly thickening as the tips of their cocks began to point, bulges forming at their bases.
Each began to whine in pleasure, bending their canine heads over as their ears flopped over, starting to lick at the others cock.
Mack heard a car pulling up, leaving the room and letting the three play. "I will be back for some more fun later, might even have another too by then!"
The three John's barely even reacted, too occupied with the others.