Ryan, I had a similar thing happen to me about a week ago.
I was lying down waiting for something to come onto the TV or radio that I didn't want to miss and was fighting to stay awake. I'll close my eyes for a second or two, I told myself

as I sort of drifted I experienced some sort of profound insight and told myself to pay attention and remember as this was important/interesting/real. As soon as I had that thought whatever it was went, I was frustrated because I couldn't remember what it was I saw/heard aaaarrrrgggghhh!!
Crumbs are better than nothing I spose but one day I hope to eat the whole cake