I don’t think the event handler proposed on [[examples:caturday]] is in the spirrit of the language, instead i  propose using OMG for that.
OMG! Boss IZ coming GTG!
 --- //Simon, 2007/06/01 14:04//

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I was going to make the same suggestion, only instead of OMG, using ZOMG, as here:

    ZOMG caturday
        VISIBLE "I IZ SLEEPIN!"
    KTHX

You could also add declarable events, or, if the events list is fixed by libraries, define which are to trigger an event handler, using ONOES:

    ONOES caturday
    ONOES nofoodz
    ONOES donotwant

...and so on. Or, if you don't want to burn both keywords, ZOMG could indicate an individual event code block, and OMG could add one to watch, replacing ONOES:

    OMG caturday
    OMG nofoodz
    OMG donotwant

 --- //Solarbird, 2007/06/02 11:50//

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I would use OMG as a "throw" statement; I think it's pretty much in the spirit of the language. For example:

    HAI
    CAN HAS STDIO?
    I HAS A VAR
    GIMMEH VAR
    IZ VAR 0?
        YARLY
            BTW throw exception "HAX"
            OMG HAX
        NOWAI
            BTW We're good
            U SEEZ "FRACZ IZ " N (10/VAR) N " !"
        KTHX
    KTHXBYE