Yep I'm with marjan on this one. Usually 'No Oscar, I don't need your help with this email...' - usually a split second AFTER he's managed to send the damn thing, so the recipient just gets an incoherent drawl, 'jgiolrj iognudf9-0956igj /:'#?~?#.'
Once, he decided to stroll across my laptop, as he does so regularly. But one day he pressed a combination that made the desktop turn upside down I didn't know how to turn it back! I had to put a Q up on a website, typing with the laptop help upside down, and they gave me the key combination to get it the right way.
That's not to mention the time he walsed across the keypad and typed 'mog' (I kid you not, he's a kitty genius!).