Registr
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Alright, Reg, you've been caught.
http://ru.wikipedia.org/wiki/%D0%91%D0%B0%D1%82%D1%82%D0%B5%D1%80%D1%81
Although Butters' real name is Leopold, both his parents and acquaintances call him exclusively by the nickname, which is a pun: "Butters Stotch" - butter-scotch (caramel candy).
But what about tea?
Если эта надпись уменьшается - Ваш монитор уносят. :D