If you have the time and it isn't going to impact any deadlines, I don't see why not. Your just treating them, how they treat you.

However, if on the following Monday anybody asks, just have to resist the urge to be sarcastic and not say anything that could come back to bite you.

Also not sure of the job market where you are, or your skills/experience, but if your boss is always irritated, it might be time to seek other employment. By all means stick it out if you have to, but if you've got other offers, could be high time to seriously consider them.

If anything it might show you how he REALLY feels about you, when he knows your about to walk out the door forever.