Halloween Hangover 

The Worst sugar crash you've ever experienced; Usually Happens the Morning after Halloween. It can be combined with alcohol.

guy 1: man, I have such a sick halloween hangover.

guy 2: Stop talking so loud!

Halloween Hangover by pwn3d_2damax November 1, 2009

Halloween Hangover 

1. The physical and mental effects of hours of excessive trick or treating or being at a halloween party.

2. The state of mind where you can't remember what went on last night at a halloween related event.

He has the halloween hangover

Halloween Hangover by TGCII October 29, 2010

Halloween Hangover 

The act of being sick from eating too much candy.

Nahh I can't go out tonight guys, I have a halloween hangover.

Halloween Hangover by pRad December 5, 2007

Halloween Hungover 

The few days after Halloween during which you've eating so much candy and sweets that you constantly have the feeling of vomit and need to take a shit.

John: dude where did All the fucking kit-kats go?

Anthony: I had like 59, I'm so Halloween hungover.

Halloween Hungover by FuckTheCandy November 2, 2010