Alright, so since no one seems to actually understand the meaning of this word, I will give the definition that Disney gave.
Main Entry: supercalifragilisticexpialidocious
Part of Speech: adjective
Definition: a nonsense word meaning fantastic; also called supercalifragilistic Etymology: popularized by the movie `Mary Poppins'
Does not mean frustrating, although it can be a bitch to spell. People who use this world on a daily basis are probably insane. Please aproach these people with caution.
Mom: "Hey daughter! How are you on this fine day?"
Daughter: "I am supercalifragilisticexpealidocious mother! Thank you for asking!!!!"
or
"supercalifragilisticexpialidocious
even though the sound of it is something quite atrocious
if you say it loud enough you'll always sound precocious
supercalifragilisticexpialidocious"
Bob: watch this Bill
Bill: OK
Bob: hey you, yes you
random person: yeah
bob: come here and say this
random person: say what
Bob: supercalifragilisticexpealidocious.
random person: supercali...superwhat?
bob and bill: <hysteric laughter>
this word is an allusion to the movie popular back in the day when we all liked to sing and dance on the rooves of houses, and jump into pictures that we see lying on the side of the street: in simnlest terms it just means nonsense
Well that idea is supercalifragilisticexpealidocious