makeubutr

/ˈmeɪk.juː.bʌt.ər/

verb, transitive. Also make u butter.

To reduce (a person) to butter; to churn, clarify, or otherwise render an opponent into a spreadable dairy product. “gg. makeubutr.”
A handle. Chosen at an age where this seemed like the strongest thing a person could be called, and then kept for far longer than that belief lasted. “who is makeubutr” — every lobby, eventually
A domain name, registered in earnest, parked for years, and finally pointed at a machine that generates the threat on demand.

An oil painting of a tall mound of pale yellow butter on a cloth, a wooden-handled knife stuck upright in it, two white eggs resting beside it. — Fig. 1 — butter. Antoine Vollon, Mound of Butter, c. 1875. Oil on canvas, National Gallery of Art, Washington. Someone painted this. It hangs in a national collection. The thing sticking out of it is a knife.

Etymology. From make + u + butter, contracted to fit a character limit that no longer exists. It meant what it says. There was no second layer. It was not an acronym, it did not stand for anything cleverer, and nobody ever asked a follow-up question — which, in hindsight, was the whole trick.

Note on usage. The threat has never once been carried out. This is not a promise that it won't be.