If the same girl wakes up in your bed for the majority of a week (x greater than or equal to 4) then you are contractually obligated to engage into a relationship with this individual. This rule does not apply when on vacation, due to the fact that there are frequently less beds and arrangements need to be made to satisfy both parties.
Dude, my roommate just satisfied the four day rule, that must mean they're dating. Sucks for him...
by Tyrone Schiff February 20, 2006
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A tradition as old as time where anyone witha boyfriend tells him what his presents are four days before his birthday to keep the Boogeyman from coming in their house and fisting them.
"Today's Tell your boyfriend what his presents are four days before his birthday day!"
by Toad-Bit October 28, 2023
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May 25th is national four loko day. If you want to party with the demons, crack open a four loko to celebrate the day.
by bobby tanktop May 25, 2022
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``` SEPTEMBER 20 ```

National Get On All Fours Day!

This is the national day where all bottoms have to get on all fours infront of their top.
T: Get on all fours.
B: W-why?
T: It's National Get on all fours day.
B: Oh.
B: (Gets on all fours)
by ImDownBad August 25, 2022
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