Someother word

One of my students wrote a sentence using the word someother, as in The guy hit someother's head. I ought to go ahead and bleed red ink all over it, but I keep thinking how useful it would be to add someother to the dictionary. Someother is far more sleek and elegant than the obvious alternative, somebody else. The guy hit somebody else's head: it's just clunky. I think I'll take someother out for a spin and see how it runs.