When someone posts something on the internet just prior to you posting the exact same thing on the same message board.

It may result in having to edit your response so you don't look like you are repeating the same information just late to the party.
Person A: My team's best player was just suspended.

Person B: 53 seconds. I was just going to post that.
by SvenFuzzy December 02, 2010
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Women who are obnoxiously attracted to you have a penis or STD.
Garth: Man see that girl over there eyeing me...shes rubbing her nipple.

Mark: Rule 53 dude.

Garth: shit
by Alixfoxlolz October 05, 2009
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This is the worlds only fully teenager run ambulance corp. It's run by 60 teenagers aged from 14-19. All post 53 members are considered posties. They respond to all accidents situated in darien ct, one of the wealthiest towns in the us. they also respond to a 4 mile stretch on I-95, one of the most deadliest stretches of highway in america. Post 53 is a nonprofit organization where it recieves no funding from the town and is a self raised organization. Post has 3 100,000 dollar ambulances all donated by wealthy business men living in Darien. The students are on duty in shifts for 24 hrs 365 days of the year including holidays. All members take a mandatory EMT class when they're 16.
John: Hey you wanna hang out this weekend.
Lilly: Nope sry i'm on duty in Post 53
John: Great, lilly out saving the world again, i'm breaking up with you
Lilly: fine.
by dbagger1000 August 18, 2009
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Reference to Content Creator Ranboo's lore on the DreamSMP.

A set of rules pops up on the screen through out his lore stream, one of them being Lesson 53 aka Never Fully Trust Anyone.
Lesson 53: Never Fully Trust Anyone.
by OliveClaw May 18, 2021
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The place where the aliens REALLY ARE instead of Area 51 or Area 52.
Area 51 and 52 don't have the aliens, but Area 53 does.
by Dopl May 22, 2020
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A joke where you invite a freind over at 10:53. When they arrive you and your buddies all jump on top of the freind that arrived at 10:53 and start humping him
alt meaning
being dry humped in an imatation of anal sex.
alt meaning 2 a guy dryhumping another guy.
Male 1. "guess what time it is."
Male 2. "What?"
Male 1. "10:53!"
Male 2. "Oh god NO!!!
Male 1 tackles male 2 and begins humping him.
by Xanxor August 20, 2008
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