afterfirst.js

var callback = function(  ) {
    
    // Stuff you actually want to do.
    
};


var afterFirst = function( callback ) {
    
    // in-use callback
    var cb = function(  ) {
        // Do nothing, set cb to callback
        cb = callback;
    };
    
    // Return a wrapper function so we're always calling cb
    return function (  ) {
        cb();
    };
    
};


var delegated = afterFirst( callback );

// does nothing
delegated();
// does something
delegated();