Taking 30 seconds to think before you say anything, because 99% of what you say right away is stupid.

This is most commonly used in the World of Warcraft.
"Raloth, 30 second rule!!!"

"Shut up Raloth, 30 second rule!"
by Valjean September 16, 2008
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In the case of not knowing exactly how long to keep smaller portions of food in a microwave oven, the general rule of thumb is to tap the "+ 30 Seconds" button on your microwave.
How long should I put the quesadillas in for?" "I dunno, 30 second rule?
by Frohman23 September 7, 2010
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A generally accepted phenomenon that of any porn scene (with the exception of compilations) the last 30 seconds will be the money shot.
Dude 1: You ever noticed that porn clips end immediately after the pop shot

Dude 2: 30 second rule of porn
by ih82luz February 3, 2011
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An unofficial rule in restaurants that dictates that you have at least 30 seconds to pick up a dropped steak, or lobster etc. from the floor before it's considered contaminated.
Owner:"Hey where are you going with that steak?"

Employee: "It fell on

the floor so, I'm throwing it in the trash?"

Owner: "30 seconds rule, wash it off and put it back on the grill."
by Mackendeez December 17, 2017
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