Your tail is trying to squirm around quite a bit now, but you remain rooted to the spot and concentrate on not moving. The clerk stares at you quizzically with his now amber eyes, seemingly unaware of his new muzzle, mane, and ears on the side of his head.
"Uh...no, I'm fine." You need to say something, or at least break the ice. "Can I...can I get one of those packs of cigarettes?' you ask, pointing to an array of them on a shelf behind the counter. "Which ones?" The clerk asks, pointing with his finger. Or at least, he tries to. As he points at the array of brands, his hand puffs up and the fingers shorten and thicken, pushing out black, sharp claws at the end. The fur covers his entire hand now and is eagerly crawling down the length of his arm, which appears to be growing larger.
"Uh... Camels." You say. "No prawwbelm, maaan." The clerk mumbles in a purring, thick tone. His voice has dropped at least three octaves. He turns his back to you to and reaches up and get the cigarettes, and as he does you notice that his entire torso and hindquarters seem to be growing exponentially. You hear a ripping sound and look down just in time to see his jeans shred as his thighs and butt swell with corded muscle. A long, thick, ropey tail with a tassel just like your own forces it's way out of his tailbone and snakes towards the floor until it's three feet in length.
Just as he turns around, struggling to hold the pack in his thick paws, you hear a sharp rip which you assume to be his feet turning into massive paws and shredding his shoes. "Fawwwwwr daaaawwlers." He purrs, setting the pack on the counter. His shirt finally can't stand his growing muscles and it rips off, fluttering to the floor, revealing a body swamped with honey-colored fur quickly losing any humanistic qualities.
Still staring at him in utter shock, you gingerly place the money down just as you hear a sharp cracking noise and he instantly shoots up four feet in height, his leonine head cracking against the ceiling. "Thanks purrrrrr the money. Have aaaaa nice niiiiii..." he yowls before one final snap is heard, sending him sprawling to all fours down on the floor behind the counter. The clerk-turned-lion continues to purr and yowl at you as if he thinks he can still be understood, looking up at you with deep amber eyes.
Another wave of heat passes through you and you feel something wrong with your shoes. Looking down, you see your feet bulging, tearing the shoes apart as they grow into massive lion paws.
In a panic, you turn and run for the door, barely registering the click of your new claws on the tile as you burst out into the station's filling area. You hear additional clicking of claws behind you and turn to see the former clerk following you out, walking near you and sitting down on its haunches and looking up at you expectedly, it's tail flicking behind it.
What just happened? Was the witch the cause of this? Before you can think about it any further, you see the distant light of the headlights of another car heading down the road towards the station.