When unsolicited advice or direction is given to you by a Nan or Grandmother not necessarily in an intentionally condescending tone, but as if you have no knowledge of what is being explained.
When a British person (tan) explains something thats blantantly obvious/false in a condescending manner to an Irish person because they're British, think they're "great" and have no grasp on their countries history.
"You know you Irish should say thanks to us if we didn't invade you you'd still be picking potatoes"
"Class tansplaining"
When someone who is not Desi/South Asian tries to explain a concept or offer an incorrect pronunciation to someone who is South Asian because the former think they know better.
White person: "Would you like some naan bread with your order?"
Desi person: "We don't say naan bread. Naan is a type of bread."
White person: "No, we call it naan bread."
Desi person: "I am Indian. My family is from India. Are you naansplaining?"
When frustrated manly men go and flood the Urban Dictionary with their definitions of the word Mansplaining, because they know it better than the feminists, actually.
Greg is so pissed off because his professor didn't want to hear him explain her area of expertise to her in his opinion, so he went meta-mansplaining in UD and invited all his friends too. (See mansplaining )
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
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).