If you heard it somewhere, it's likely:
* A joke or playful expression: People sometimes use gibberish words for humor or to create a silly effect.
* A misheard word: It's possible someone mispronounced a real word, and you misinterpreted it.
* A unique slang term: It might be a slang term specific to a certain group or region, but it's not widely understood.
To understand the intended meaning, you'd need more context:
* Where did you hear it? (In a movie, a song, a conversation?)
* What was the situation? (Was it said jokingly? Seriously? In a specific context?)
If you can provide more information, it might be easier to figure out what "hurgy schmurgy" meant.