Post-Holiday Depression (PHD) 

When one becomes depressed as the fun of the holidays comes to an end and everyone has to return to their boring, everyday lives.

Often goes hand-in-hand with christmas tight.

Bob: "What is Steve's problem?"

Sue: "I think he has a severe case of Post-Holiday Depression (PHD). I heard him crying when his co-workers in the next cubicle were talking about their holiday vacations.

Post-Holiday Depression (PHD) by hahaidontgetit January 6, 2010

Post Holiday Depression 

Post Holiday Depression (PHD) : General feeling of sadness and depression and hatred of all things work-related soon after a long holiday. Symptoms usually show at least 4 hours into the first work day after a holiday and can linger for up to a year until the next festive season.

No known deaths have have recorded due to PHD, but severe cases of office in-fighting, bickering, and crying have been noted in the IT industry soon after New Years.

Sue came back from the Cape Town with a severe case of Post Holiday Depression and refuses to send those invoices!

Post Holiday Depression by Dr I. H. Work January 26, 2010

Post Holiday Syndrome 

The syndrome you have when you have gone through a holiday and no longer have a functional daily rhythm. A person with a Post Holiday Syndrome will then be awake at night and sleep at day. It may be in relation to the heavy partying a lot of people do when on holidays.

Guy: "Dude, I can not possibly go to school now! I haven't gone to bed before 3:00 AM in the last 2 weeks! All this partying has been killing me!"
Dude: "You're not the only one with a Post Holiday Syndrome..."

Post Holiday Syndrome by Stian Christer Pedersen August 20, 2007

Post-Holiday Hangover 

A feeling of depression or overall melancholy when the Holiday season has passed, having to go back to work and/or school is a major factor in Post-Holiday hangover symptoms.

John: "Hey, do you know where Phil's at?"

Susan: "Ah, he told me he was calling in sick today. post-holiday hangover got the best of him, I suppose."

Post-Holiday Hangover by venom5517 January 3, 2011

Post holiday depression 

The time between the holidays and your next pay-cheak when you don't have any money

Bob: Hey Joe! Wanna go out for dinner?
Joe: No, I'm still in Post Holiday depression until next week.

Post holiday depression by Arrrrrrrrg January 2, 2009

postholiday waistline shopping period 

(Noun) The six day period from December 26th-December 31st during which people buy large amounts of Slimfast, weight loss supplements, detox kits and protein bars.

During the postholiday waistline shopping period, stores like GNC and Whole Foods see a jump in their sales while consumers try to shed their holiday pounds.

postholiday waistline shopping period by Crackberry:) December 29, 2009