If you aren't using Embiggen in your everyday jibber-jabber, your life must be sad and small. The Simpsons have been around for a couple decades now, and have given us so many fabulous words and made-up Simpsons sayings and Bart slang... SO many that, really, should be in the dictionary despite their dubious meanings. I mean, if you can't figure out what Tramampoline means... come ON. There's a more complete list out there somewhere, I'm sure, but these are the best of the fakes... the best words that the Simpsons have given us.
http://www.ranker.com/list/the-best-fake-words-from-the-simpsons/analise.dubner,
D'oh
Jeebus
I don't even believe in Jeebus... save me Jeebus!
Cromulent
It's a perfectly cromulent word
Meh
Unpossible
Me fail English? That's unpossible!
Kwyjibo
A big, dumb, balding North American ape with no chin and a short temper.
craptacular
Saxamaphone
Sax-a-ma-phoooone, sax-a-ma-phoooonnnee.
Tomacco
Oh, Daddy! It tastes like Grandma!
Embiggen
A noble spirit embiggens the smallest man.