half-day 

A day when it starts to snow/ice after schools starts, then the school system's administrators have to call off school early due to possibly more dangerous conditions during regular dismissal. These can be often very stressful for staff.

*While in school* "It's snowing outside everyone! HALF-DAY!!" -Obnoxious student

half-day by seshormerow November 16, 2014

Half-Day Dave 

Derived from the expression Hedo Dave and Cutting Out Early. A Half-Day Dave is a person who is never late twice in the same day. This means that if the person arrives to work late, then in order to not be late twice in the same day he must leave early. Typically, a Half-Day Dave person will arrive sometime after 9:30am and leave work by 3:30pm at the very latest.

Note that the Half-Day Daveer need not necissarily be named Dave. It has been seen on numerous occasions that The Rod is actually better at arriving late and leaving early than even Dave himself!

Hey The Rod - I see you have your Karate uniform... I guess you will be pulling a Half-Day Dave again!!!

Half-Day Dave by Hedo Dave June 4, 2004

Half-Day Harry 

A noun used to describe those who bunk off work/school/anything for any reason, including sickness, laziness etc.

Steve: Where's Tom off to?

Dad: To play the XBOX... He's such a half-day Harry.

Half-Day Harry by a72 July 29, 2011

Half-Day Tony 

A person who starts a new job and quits after only half a day. Typically goes to lunch, never to return.

"Where's the new guy? Didn't he go to lunch... like 2 hours ago?"
"Uh ohh, he's not coming back is he? Don't tell me another one's done a half-day Tony?"
"Fuck."

Half-Day Tony by Jabba T. Hutt March 27, 2016

Half Day King 

A person who is exceptional at taking time off work, without anyone noticing.

This person has minimal work ethics, and usually comes in late, has long lunches and leaves early - making up silly excuses.

Andy: I am rolling out at 4.15 today. Fuck that 5 O clock shit.
Roscoe: Damn, how come?
Andy: Haircut. Ill do that shit on work time.
Roscoe: Damn Andy, you got in at 10, had a 3 hour lunch and leaving at 4.15! Your the Half Day King!
Andy: Word, yo.

Half Day King by YourMate84 March 25, 2010

Half-Day Harry 

A noun used to describe those who bunk off work/school/anything for any reason, including sickness, laziness etc.

Steve: Where’s Dan off to?

Matt: He has a long long trip this afternoon, all the way to Joondalup for a wedding on Sunday… He’s such a Half-Day Harry.

Half-Day Harry by MattyS June 6, 2014

Ghetto Half Day 

When your school gets a Shooting or bomb threat and everyone is evacuated and sent home.

Billy; Yeah we had a Ghetto Half Day on Friday
Madi; OMG is everyone ok?

Ghetto Half Day by TGIThursdays September 7, 2018