You decided to lift the hyena mask over your face & put it on. Looking yourself in the mirror that you were amazed at how good it looks on you. the fur looks so realistic as the teeth seem sharp in the mouth that you could of swear this was a real hyena head.
looking in the mirror that you thought it was pretty funny on how the hyena head looks on a normal persons body that You chuckle to yourself, but at the same time looks nice on you. You keep on looking at the mirror and the more you did, you began to laugh harder and harder. Eventually you could't breathe through the mask anymore that Your vision fades and you collapse on to the ground, but you were still laughing.
You wake up later and notice that there's no longer light pouring into the room, it must be late. You reach into your pocket to pull out your phone, but As you go to check for it that you see a clawed had covered in fur. You run over to the mirror and take a look at yourself. The mask had somehow fused with you body.
You noticed that your shirt and pants were torn off of you while looking at yourself to see your new body. As you do you noticed your body is covered in the fur as you seem taller that While you can still stand up right, but your legs are noticeably more canine. You look more like a werewolf, but in a hyena form.
as you look thither down at yourself more that You find out your manhood has grown massively large as your shoes are nearly destroyed from your new, large feet. You try to pull at your face to see if this is permanent, but nothing budges as it hurts you. realizing what you are that You are now an humanoid hyena.