A buttercock: a person, website or object people constantly use but get mad at when something goes wrong on their behalf. Like using a cock made of butter, self lubricating but when it breaks you blame it instead of yourself for choosing to use it
P1: "why did you send a link with that Wikipedia page."
P2: "it was Wikipedia's fault."
P1: "Bit of a buttercock then."
When a person is falsely accused of a wrongdoing so they harshly beat the accuser with a sock filled with frozen butter and then proceed to ass rape the beaten persons wife or husband.