Hair grease - A total guess, like when you don’t know what something means

A total guess, like when you don’t know what something means and you’re too lazy to find out.

I said, 'Hair grease? I have no clue. Someone explain it to me or I’ll cry.'

My friend asked what hair grease was, and I said, 'I have no idea. Define it or I’ll beat you up.'

When I heard the word, I said, 'No clue. Someone define it or I’m leaving.'