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Rule of thumb

A rule of thumb is a general guideline or basic principle that people use based on experience, not an exact rule or law.

The origin of the phrase likely comes from using the thumb as a quick measuring tool (about an inch wide)
“As a rule of thumb, if pasta sticks to the wall, it’s done cooking.”
by soph2018392 September 8, 2025
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Rule of Trump

Whatever subject; the economy, medicine, AI etc that Trump asserts he knows everything about, he knows nothing about. Every subject; Epstein, his health, extra-judicial killings etc that Trump asserts he knows nothing about, he knows everything about.
POTUS just Rule of Trumped about the newly-released Epstein photos
by GuyTheGorilla December 14, 2025
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The Rule of Thumb

The teenage act of using your thumb as a hole guide for your cock which is larger than she is used to. After slapping your fumbling dick in your palm, you gently insert your thumb into her pussy. Like Houdini you simply run your cock along your thumb, using it like a ruler or a guide, to direct and allow an easy and simple access’s to an otherwise unsatisfied pussy.
She was too tight for me, it was dark and I couldn’t even find her hole
properly. I heard Jimmy strolled in last night at the pub and after a few drinks he took her home. Apparently he used “the rule of thumb” his old
Man taught him. After a while the crafty fucker worked his huge knob to the hilt - and we didn’t see him for 3 days!
by Jungle Diver August 1, 2019
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Tinder Rule of Two

This term is a universal rule of probability. The rule states that whenever there is a picture on a dating app that contains two girls, with one of them being significantly more attractive than the other, the person whose profile you're swiping is the less attractive of the two.
When I saw Isabella pictures on Tinder I got excited when I thought she was the hot girl on the right....turns out I fell victim to the Tinder Rule of Two.
by Babiyodah September 18, 2023
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The rule of the 70’s gremlin

The Rule of the 70’s Gremlin is that,” you can take a crappy car and spend an exorbitant amount of money trying to make it more powerful and better looking”, but at the end of the day it’s still just a crappy ass Gremlin. You need to try another approach.
Look, we can spend another 2 billion on upgrading the state spending for the year, but it’s sill going to be stuck with “The rule of the 70’s GREMLIN” all over again. We need a fresh start.
by DaMartianAC January 24, 2025
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Golden rule of the internet

The rule that only one person on the internet may have an opinion on what is and is not funny
"Dude that video you sent was unfunny as shit."
"Don't you know the golden rule of the internet? Only what i say is funny matters."
by Neg is better at risk of rain November 18, 2021
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Wise-Parker Rule of Three

A misperception of the amount of time passed in someone else's company. Typically, the time dilation is by a factor of 3, however, it may be less with less intense feelings.
Guy: WHAT its already 3 oclock? We've been been together for three hours already?? Its only felt like one.
Girl: Wow, we are awesome. We just validated the Wise-Parker Rule of Three!
by Muchacho 1 June 20, 2011
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