1st grader

someone that is 6-7 and are small but think there older than other people
mom: its time to go to 1st grade!
1st grader: okay mommy!
by ack December 01, 2018
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the 1st and the 15th

These days in the Army are well known as pay-days. These are also the days (or weekend of) that lower enlisted (privates) spend all of the their money on: Booze, clubbing, and other useless shit.
*partying at the club or local strip club*
Private 1: "Man, I wish I could get out here more."
Private2: "I know, but only the 1st and the 15th."
by ThatOther1guy November 17, 2016
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October 1st

October 1st is national ask out your ex day.
Go on - admit you’re feelings! Do it!
“ew, they’re exes why are they talking”
“idk”
“oh it’s october 1st
october 1st - also known as the start of spooky time
by UncleElcnu September 30, 2020
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1st lay syndrome

A serious psychological condition, when a male loses his virginity and now believes he is permanently and forever in love with that female.
Rachel: Max finally lost his virginity with Kylie and is now crazy in love with her.
Todd: Oh boy, he has "1st Lay Syndrome". We better arrange an intervention.
by The Jungle Prophet February 14, 2018
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1st Civ Div

Short for 1st Civilian Division. The absolute best unit known to any military personnel. The place where a Marine rediscovers their individuality and actual self worth. No Gunnery Sergeant Shithead or Sergeant Major Good To Go anywhere to be seen.
GySgt Shithead "HEY DEVIL I KNOW ITS GOOD MORNING GUNNERY SERGEANT!!"
Devil Dog "Go fuck yourself I'm headed to the 1st Civ Div. Shove your proper greeting up your ass Gunny shithead"
by Errrraaaahhh October 31, 2020
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1st world issue

Topically an issue that can only be related to a modernized economic region, the issue typifies a problem that has no real significance or impact on the quality of life of the usually affluent person.
"The heated seats won't work in my Range Rover" = 1st World issue
by King Kenton of Barmby February 08, 2014
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1st law of HH

The first law of HH (hamburger Helper) is that you must always burn your tungue on the first bite.
guy1: ahh! crap!

guy2: Dude, what is it?

guy1: 1st law of HH, man

guy2: ouch, sucks to be you
by Dujac0 January 21, 2008
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