The available article content consists only of the headline and website navigation elements, with no substantive text describing who called Keith Richards "a nasty little bugger" or in what context. Far Out Magazine, a music and culture publication, appears to have published a piece revisiting a remark made about the Rolling Stones guitarist and singer, but the specific source, occasion and full quote are not present in the retrieved text.

As such, no further details, dates or context can be reliably summarised from the material provided. A fuller read of the original article would be needed to confirm who made the comment and why.