"Oh Funny! I'm ther-ssse-ferious stof it!" You say, trying to talk around your newly altered teeth. The tiger looks up at you and (you swear) rolls it's eyes at you. As he does this your teeth continue to alter, and your head's shape alters. Your eyes and forehead push back is your nose and mouth push forward. Your old ears get absorbed into a mass of fur that grow out of your head. Within moments you ar no longer capable of making any threats at the tiger, because your head is now a tiger's head.
You turn around to run, but your back starts to arche back and your tail lifts up involuntarily forcing you to fall forward. You feel your arms and legs altering in size and shape and the fur continues to grow all over your body. Within moments you've been turned into a tiger.
"So...you teased the tiger huh?" you hear a voice behind you. You turn around to see a fairly young, slightly overweight woman behind you in a zookeepers uniform. She grabs you by the scruff of the neck and drags you back into the room where the tiger that turned you into this was.
"The sign specifically says 'Do Not Tease the-' Oh!" she stops in mid sentence
"Oh those dumb kids! They took the sign down again!" She looks at you.
"Well it wouldn't really be right to keep you in this form now I guess. C'mon with me and we'll see if we can get this reverse by 98%." She gestures you to follow her.