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

extended holiday syndrome 

A bodily state which mainly affects high school students, although it could apply to anyone of any age. Symptoms include nausea, random headaches, feeling lightheaded, feeling worthless, useless, lacking motivation, having no sense of direction, and decreased stool. Usually caused by someone having a holiday lasting more than one week, something like winter or spring break, and having said individual being a lazy teenager and not leaving the house. Video games on all day, movies being watched alone, excessive fapping, uncontrolled snacking, all a result of laziness. poor excuses may be made where the individual needs to "rest" because of the long school year. Just leave the house, get some fresh air, see some friends, and symptoms will lessen.

me: *waking up* holy shit it's already 3 pm? wtf am i doing with my life? I didn't even drink yet I feel hungover? I must have extended holiday syndrome. I need to get the fuck outta here

(texting a friend): fuck me i've fapped seven times today. what do I do now???
(friend): man.. i just want to go back to school now

extended holiday syndrome by chinesemofo March 29, 2013

after holiday syndrome 

The feeling of dread you get when returning from an awesome holiday...

Look at that cunt still on holiday while I'm here suffering from after holiday syndrome...

after holiday syndrome by Salty Seaslider November 12, 2015

holiday distress syndrome 

the period of constant laziness right after the holidays

Girl1: hey ya! hw was skul
Girl2: dang was tired like a matha ey
Girl1: hahaha it cud be that ur sufferin frm HDS
Girl2: HDS?
Girl1: hahaha yeah Holiday Distress Syndrome totally sux ey

holiday distress syndrome by nikey May 1, 2009