Classic Blunders 

From the part in The Princess Bride where Vizzini is telling The Man in Black why he's going to lose their battle of wits and then dies.
1- Never get involved in a land war in Asia
2- Never go against a Sicilian when death is on the line

"There are two classic blunders the first is never get involved in a land war in Asia, and the second is never go against a Sicilian when death is on the line!!! Ahahahaha--" death.

Classic Blunders by unexpectedHATS October 11, 2011

bedtime blunders 

Getting caught masturbating while your roommate because of one shaking the poorly made college bunkbeds. The second most important reason why college students should have separate beds. The most important reason would be the story every college tells you about the star student/athlete that fell off the top bunk and got paralyzed and almost flunked out.

Fuzzy has bedtime blunders.

bedtime blunders by Downvoting Victim January 18, 2006

The Seven Classic Blunders 

Seven classic blunders that may befall a mortal soul if they are not careful. The list varies by region but all corners of the earth have seven classic blunders.

"hah! You have fallen for one of the seven classic blunders!"

The Seven Classic Blunders by The Goblin of The Nort July 14, 2021

Blunderbussin Shmogoggular 

A person who has reached the pinnacle of whatever it is that can be, this person is beyond time space and existence as we know it. To be called this is confirmation that you are one of the most based individuals to ever exist.

"That bloke is a real Blunderbussin Shmogoggular"

Blunderbussin Shmogoggular by ^Tree July 9, 2022

sunder blunder 

A destructive, albeit amusing, party foul.

Dude you just woke up the entire house with your vomiting? What a sunder blunder.

sunder blunder by trinity2010 July 13, 2010

blunderkind 

opposite to ‘wunderkind’ \ an accident prone person of any age

He’s an accident seeking somewhere to happen – a total blunderkind.

blunderkind by ΔиłĦ☼иצ ߀₡ʞ September 2, 2011

flarpy blunderguff 

Word made up by CBS for the show Criminal Minds. Episode titled The Black Queen, aired 01-05-14. Show hinted it was a sexual act involving food and oil based paint. Fans quickly searched the internet for a definition, but since it was a made up word, no definition exists. "Flarpy Blunderguff" quickly trended on social media sites such as Twitter and Facebook.

"I'm going to tell you but first I have to explain in explicit, sexually inappropriate detail what a flarpy blunderguff is." -Penelope Garcia

flarpy blunderguff by C.M.fan January 23, 2014