In this one, I was at his house and somehow got in. There were a bunch of other people there too, but they were all working. Since of course I wasn't supposed to be there, I picked up a basket of laundry and started carrying THAT around the house to blend in. I overheard someone talking about how he was in his basement, working on new songs.
"Cool!" I thought and started down the staircase conveniently located to my right.
When I got down there, there was no recording studio, no instruments or anything, just a bare room that a cheap tv set with a video game hooked up to it and a mattress on the floor. He was standing facing the TV, breathing heavily and the back of his shirt was completely soaked through in sweat. Completely drenched.
"How did just his back get all sweaty?" I thought.
Before he could turn around, I ran back up the stairs so I wouldn't get caught, but he heard the stomping and came after me. He caught up with me out in the hallway. I was still holding the basket of laundry and he looked at me in recognition, like he remembered me from the concert and his face had a look on it that said, "What are you doing in my house?" and then he actually said, "Hey, weren't you..."
And then I woke up.
I hate sweaty dream Dave Grohl.