When you make up a word in order to rhyme it with an existing one. The term is derived from Dr Seuss an author who wrote children's books like Cat in the Hat and The
Grinch.
Dr. Seuss is probably the only
person to ever
gt away with Seussing because he was awesome like that, but if you do it, you suck.
You may find something like this in a Dr Seuss
book.
The animal wrangler fought back the
beast with his amazing shcrizzlefangler!
Now, how to use it in a sentence....
Rapper: Yo! rollin' up in my fine ass
jeep, bouncin' my head like a verzkizical shmeep!
Poet: Dude, at least try to rhyme, you're just Seussing right now.