Why I Don't Usually Remember My Dreams

Last night I dreamt I was humping former '70s Wonder Woman actress Lynda Carter on the floor in the Rose Center at the Museum of Natural History in New York and nobody even batted an eye, except for Alex Trebek who stood there firing Jeopardy questions at me while I tried to shoo him away like an annoying mosquito. Lynda finally got fed up with me because I couldn't answer any of his questions, pushed me away, pulled up her star-spangled short-shorts and stormed off. I said, "thanks Alex, thanks a lot. You've driven Wonder Woman away. Are you fucking happy now?"

Is this normal?