In English, there are a couple of common expressions that we use when someone is acting grumpy in general and especially on Mondays. The first one is ¨Someone woke up on the wrong side of the bed!¨ and the other is ¨Someone has a¨(bad) case of the ´Mondays¨.
Let´s see if anyone knows these expressions or similar ones in SPANISH! Give it a try!!