My children frequently use the word "verse" as a verb --- not in the technically correct sense of "to compose verses", but as a transitive verb form of the preposition "versus". For example they might say "I'll verse you at Monopoly." For a long time I'd never heard this usage other than from my children (though I assume they picked it up at school), but recently I saw it in a New Zealand online forum. I wonder if this originated locally and whether it will stick. I think it's actually a useful word; the closest equivalent I can think of is "play", but in my mind "I'll play you at Monopoly" doesn't carry the same emphasis on competition.