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A topic of conversation that has diverted wildly from the original conversational thread and is generally viewed by all (but the one leading the topic) as being without resolution, or at the very least is uninteresting to others in the group. Ratholes usually open up when related but tangential topics are discussed which are explored in much more detail than is required for the relational reference to the original thread.
I was trying to keep things on topic, but you've opened up a big rathole with all this talk of comic book plot twists.
rathole by Stark Raven Mad August 4, 2007
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Poker jargon for a no-limit strategy of buying in for only a small amount and leaving the game as soon as the buy-in is doubled.
A guy with 10 bets in front of him doubled up and then jumped back in his rathole.
rathole by c88pokahz April 29, 2010
Ratholing can take the form of scamming someone or just generally handing them a bad beat. A rathole can also be an income account in the world of accounting and finance.
Debit Magic Online Inventory, Credit Rathole
rathole by BoddyT August 6, 2011
A second anal hole that can be dried up. This is then a stiff rathole. It needs to be moisturized at this point. If you don't a tentacle will come out.
He has a big rathole.
Rathole by Stiff Rathole July 7, 2017
A rathole is a person that you dont exactly hate but youre definitley not friends with them
"wanna hang with them?"
"nah bro theyre ratholes"
rathole by yourlocaldinguseleni September 2, 2020
/ ˈrætˌhoʊl /
noun. "rathole" | plural "ratholes"

1) The largest orifice on a human skull, typically used for intake of food, or exchange of CO2 rich air, with oxygen rich air. Some humans try to communicate through their rathole, with varying degrees of success.

It is called such, as it is the hole you eat rats with, therefore it is the rathole.

Some deviants use their ratholes as a way to begin the mating ritual. Some in more perverse ways than others.

The phrase was brought to common knowledge with the (alleged) fantasy time travel television/cable show, "Future Man" (2017, Hulu)
Josh: You call your mouth a rathole?

Tiger: What else would you call the hole you put rats into?
rathole by JWSmythe August 28, 2022
A rat that has a hole in its body. This word could also refer to a hole created by a rat, but you can also use it as a meaningless insult. It can also be used as an alternative to the word butthole.
"Bro, look at that rathole."
"Dude, you're such a rathole."
"Lick my rathole."
Rathole by Elidacucumber December 15, 2023