it's a fantastic word that describes a lot but it's a swear word, GRUBIANHELVETE!!!
where is my jewel?!, you lost it?!
Yeah, sorry...
grubianhelvete!
It's a word yo can use in any sentence actually. It is more likely a word you use when you run out of words to say to keep the conversation going.
me - How's your day going?
him - yes
me - ...
me - nepper pepper