Do you guys work with someone who is grumpy this holiday season, who normally isn't.

I feel like my whole office transformed last night from being happy people to just a bunch of grumps. Its really weird especially on a friday when most people are happy. last night I went into the hardware store and a good customer was there who always has a smile on seemed to be in a bad mood and I was concerned. Did we have a lightning storm that didnt effect me or what?