A creature that should be tossed out of society and life itself, who as the name suggests has a sexual attraction to the famous content creator Dream (who is famous for making Minecraft manhunt videos and speedruns).
The "people" who use this word to identify themselves often are desperate to join the LGBTQ+ community because they were probably bored and had nothing to do, usually minors as the part of their brain that contains common sense has not developed yet.
mistake : " I'm proud to be dreamsexual !"
normal human being: " and I'd be proud to run you over with my truck !"