I did not have the foggiest idea what he meant.
"I didn't know what to do, so I put an arm around her. Before I knew what was happening, I started to cry, and I didn't have the foggiest idea what I was crying about."
The thing is this — I don't have the foggiest idea of what it means to relate to something like 'the Force' — some impersonal power in the sky.
