floor rule 

An un-written rule given to the amount of time food can be consumed after falling onto the floor. You should pick up the food quickly if you want to eat it. Usually 3-10 seconds before it is deemed to dirty to eat.

"Shit i dropped my toast on the floor"
"Quick dude pick it up. 5 second floor rule!"

floor rule by Some DUDE!!!!@ September 17, 2006

The one floor rule 

The understood rule that unless you are handicapped and cannot walk, you never take the elevator when only going one floor up or down. Failure to comply by this rule results in wasted time for all other elevator passengers, and will undoubtedly lead to death stares and possible bodily harm to said offender.

I was late for my big meeting because some idiot was too lazy to take the stairs and decided to break the one floor rule.

The one floor rule by Father MacKenzie February 23, 2010

One-Floor rule 

The annoying rule applying to Cougar Village, an on-campus student housing facility at the University of Houston, that says you can only use your Cougar ID to go to ONE FLOOR of the building, the floor you live on, and no other floor.

The elevators have magnetic strips where you have to swipe your ID in order to use the elevator. Sort of an overly-bureacratic security measure type thing.

(Two people get into an evelator at Cougar Village and one guy swipes his card to go the third floor.)

Guy 2: Hey man can you hit 6 for me?

Guy 1: One-floor rule bra, sorry. I live on 3.

Guy 2: Man, fuck that.

One-Floor rule by FuctButSects October 24, 2010