In the US, "bugger" is a mere counter word and not naughty at all. Only the educated know the connection with sodomy. I have hears one working-class man tell another that his 4-year-old by was "a cute little bugger".
Bee-Dubya-Ell is mistaken; there is no need to add another "-er" to turn the verb into a noun; indeed, the noun sense is the original one. It got its start as a corruption of "Bulgar"; it seems that some Bulgarians were heretics in an era when heretics were routinely accused of buggery.
As a sometime bugger & bear admirer, I would be happy if P. Ellis wanted to bugger me.