A South African correspondent writes to tell me of a nice noun/verb conversion. Evidently, someone who had graduated 'cum laude' told her that she had 'cummed her degree'. I hadn't come across that one before. And she asked about the unusual use of bus as a verb. Is this a new usage?
It certainly isn't. The Oxford English Dictionary has a first recorded usage of bus as a verb from 1838. But the word itself is unusual. It derives from omnibus, which is the dative plural of the Latin word omnis, so it means 'for all' - a 'vehicle for all'. I can't think of another instance where an old inflectional ending has risen to such English linguistic heights.