What the heck, as the Macca's ads like to put it, is: a slice of "rasher bacon".
When I went to school, you could have a "rasher" of bacon, meaning a "slice" of bacon.
So do we now have a slice, of a slice, of bacon???
Either the language has changed, or the advertising-copy writers are full of well, porkies... Gosh! fancy that!
