The Wrinklefucker is a Hammerkind weapon, and as such, will either slot into your Hammerkind Strife Specibus or create a new one. Attempting to equip the Wrinklefucker when your Strife Specibus has four other specibi will result in the weapon being captchalogued.
The Wrinklefucker deals 4 base damage, and can attack 2 times per second.
The Wrinklefucker can currently be made by simply doing Sledgehammer||Pogo.
The Wrinklefucker may also be made with Hatchet || Small Pogo Hammer.