That’s a good question, and we’re not quite sure! There’s still lots that we need to find out about why we dream – we’re still not sure what the reason for dreaming in general is, yet. Some scientists think that it helps your brain process events that have happened to you during the day, and encode useful information in to long term memory. But sometimes, we get really whacky dreams. It’s wholly dependent on the individual’s experiences, but it might just happen to be the brain connecting very odd things together. Other than that, we don’t really know why we have unusual dreams (or at least, we don’t know yet)!