How to disable copy and paste in webform textarea? Is there a way to disable pasting into a webform textarea field?

I've created a textarea field called: my_words and I want to forbid anyone from copying and pasting text into this field.
I've not tested this code, but a quick Google search suggests the following (obviously change #Password to the ID of your textarea field).

$(document).ready(function() {
    $('#Password').bind('cut copy paste', function(event) {
        event.preventDefault();
    });
});