It looks like you are using an ad blocker. That's okay. Who doesn't? But without advertising revenue, we can't keep making this site awesome. Click the link below for instructions on disabling adblock.
I found this app called Sigmund that apparently allows your to control the topics of your dreams. It was developed at Harvard and MIT. Research has shown that external stimuli presented during sleep can affect dream content, thus reflecting information processing of the sleeping brain. So basically it repeats simple words (such as winter) into your ear while you are sleeping. It is calculated to recite them at certain stages of sleep.
I'll test it tonight and see if I have a dream about.. sex, flying, college, winter, and chocolate.