Skip to main content

Iron Coffin 

Iron Coffin was a rueful term coined by German submarine ("U-boot" or "U-boat") crews to describe their vessels during World War II. This term reflected the submariners' awareness that submarines are usually sunk while they are submerged, so that the crew of a sunken submarine is interred forever in the hull at the bottom of the sea.

The term is descriptive and makes the desired point, although during the war submarines were made of steel, not iron.

The truth of the term is evident in the fact that between 28,000 and 39,000 U-boat men died in the War, representing a casualty rate between 75% and 90%. The lesser number is most often quoted. The wide difference in estimates may result from the fact that many U-boat men died in air attacks while ashore, or were killed after being re-assigned to Army units during the last months of the conflict.

In the early 1970s the term gained some familiarity among English speakers after the publication of a memoir of the same name written by Herbert Werner, a former U-boat commander.
When a submarine sinks, it becomes an iron coffin.
Iron Coffin by Walking Point April 30, 2009
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

Iron Coffining

The act of putting your or other people's nail clippings inside a condom and using it during sex.
"Me and this girl decided to try out Iron Coffining but I didn't enjoy it."
More from Urban Dictionary
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
NYC people who migrate north to Quahog, RI to see the leaves in the fall.
New York and everyone from there can fornicate themselves with an iron stick.
leafers by ss++ February 8, 2005
Word of the Day on September 27, 2026

Respectfully 

Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.

After school, The Modells on Jamaica Ave was active. Respectfully.
Respectfully by john quan the first December 20, 2020
Word of the Day on September 26, 2026

You met me at a very Chinese time in my life

A moment in time where you feel distinctly Chinese over all other things.
Dante: "I wish I could be Nigerian, but I can't because I'm Chinese. You met me at a very Chinese time in my life."
Word of the Day on September 25, 2026
Load more