I'm going to say right now that I never cared for this or the DCK series. It just seem crude for the sake of being crude. I do like the joke about the ghost is the only logical explanation. I don't see why Velma is called a dyke. I mean, there's a lot of openly gay characters in animation nowadays. Well, at least characters that have been confirmed to be gay.
This just had too many easy jokes. Everyone makes Scooby-Doo jokes like these. It's so weird to look back at Michael Jackson jokes. We found out Bill Cosby was much worse. Then we found out there tons of other celebrities who were rapists!