the accidental insertion of ones penis into the anal canal of a woman during sexual intercourse .
during their first romantic interlude between gus and sue, gus performed a butt blunder, and needless to say, their session terminated quite abruptly.
When one's roommate catches one in midst of a masturbatory act during the nighttime, caused by the fallacious assumption that the roommate will not be awakened by the sounds of shaking bedposts and heavy breathing.
Dude!... my roommate made a bedtime blunder yesterday and woke me up!
During the setting up phase or first turn of a game (primarily a board game), the player who's turn it is makes an overly aggressive and erroneous turn. The player doesn't recover from the mistake for the remainder of the game. This was named after board game reviewer from Dice Tower.
A player decides to found a civilisation in an arid desert.
Did you see that player's first move, a typical Dilisio Blunder.
To be the type of idiot that not only doesn't have a proper grasp of the English language, but also has no coordination and occasionally runs into things and trips over their own feet
Allison is a blundering idiot and usually gets high right before going to her parents house.
Combination of "blunder" and "number crunching," describing the exasperating experience of trying to figure out which supermarket item is giving you more for your money on a dollar per ounce basis.
A lot of times these days supermarkets will break down the cost per ounce right on the face of the shelf price tag. However, sometimes you find yourself blundering through basic algebra, trying your best to hold your own. Forget about it if you're trying to convert between grams and ounces: you're just done, and you'll make your decision on some other factor.
If you have your phone with you, you can use the calculator function to avoid blunder crunching. In no case, however, must you mumble to yourself out loud as you try to do the calculations.
Don't be the guy mumbling to himself while trying to decide between Starkist tuna or the store brand. Keep your blunder crunching as private as possible.
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When using facebook mobile and attempting to search for someone, accidentally posting their name as your status. Even more embarrassing when it's someone you hardly know.
"I was facebook stalking this girl and when I went back to my wall I'd made a Facebook Blunder"
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Derogatory term for a human, of any gender, who just "Can't seem to do anything right"
George W. Bush is such a blunder puppet.