DAM Syndrome
DAM is Day After Monday, and the syndrome is typical of crabby, caged behaviour of office goers. It's worse than Monday as the relaxation of Sunday has been long forgotten &Friday is a long way away!
eg 1:
She: My boyfriend is behaving funny today
He: He'll be better tomorrow. He must be suffering from DAM syndrome

eg 2:
Ms. Depressed: I feel terrible even after coffee
Ms. Chirpy: It's Tuesday. You prolly have DAM Syndrome. Nothing serious :)