Moggy donk

Usually defined as 'just moggy donk', it doesn't have a set definition.

It is a contextual phrase that can be used as a placeholder word in conversation and when you're asked a question you don't know the answer to.

1. "Sculptor Frederic Auguste Bartholdi based the face of the Statue of Liberty on whom?"
"Moggy donk!"

2. "That is just moggy donk.."