Block command for X milliseconds

[Symbai]

How can I block a command in MVVM (no third party implementation!) for X milliseconds to avoid its being accidentally executed twice by double press / click?

At the moment I have to create property for the CanExecute command function which I change with delay but I wonder if this can be done any better with less code.

[miloush]

Remember the last time it was called and do nothing if it hasn't been long enough? I wouldn't use CanExecute because it is reflected in UI, key bindings etc.