Yes. Dreams can be realistic, and just plain weird.
I once dreamt that i was with my grandfather to the dentist. It was a small room, which lead to a big sircular room. Suddenly, grandfather opened his mouth, and everything was sucked right into it. I grabbed a lightpost, which for no reason was there, as my legs left the ground.
The dentist was standing behind grandfather, looking at me with a evil smile.
Then i couldnt hold there anymore, and was dragged backwards.
Then i woke up.
I'm scared.