You're with a female friends of yours.

Suddenly her mouth opens, and there's a silver beak inside. Her mouth opens wider and wider, revealing a large silvery bird head inside her maw as it stretches open like a hollow empty skin suit.

She pulls her mouth open more, stretching it out as a creature steps out. Her empty skin suit body falls around the ankles of the creature, which is me.

I'm a "Warwolf", a creature with a shiny reflective body devoid of fur or hair that looks as if it's made of metal, but it isn't. My shiny body is slick with smooth skin and has claws on my hands an feet. I can crawl on all fours and have a body shape like that of a wolf but more muscular. I have the head of a bird with a big long silver beak. glowing red eyes and a literal silver tongue.

"Finally! A new skin suit!"

I pounce on you and try to drain your life essence, which will cause your skeleton and internal organs to discorporate and leave behind your intact skin. I intend to wear your actual skin (and clothing) to masquerade as you, altering my shape to resemble the you perfectly.