Originally appearing in a trailer for Paper Mario Sticker Star, NYARGLEBARGLE was used in the context of a magic spell, but the abstractness of the phrase makes it a useful substitute for any word that is a description.
Example 1
------------
P1)"Maybe I'm taking this too far."
P2)"It's the best made-up word ever. No you're not taking this too far."
vs
P1)"Maybe I'm taking this too far."
"It's the best made-up word ever. No you're not taking this too far."
Example 2
------------
"He's just jealous he doesn't have NYARGLEBARGLE."
------------
P1)"Maybe I'm taking this too far."
P2)"It's the best made-up word ever. No you're not taking this too far."
vs
P1)"Maybe I'm taking this too far."
"It's the best made-up word ever. No you're not taking this too far."
Example 2
------------
"He's just jealous he doesn't have NYARGLEBARGLE."
by Painguy October 5, 2012