Why did the serial killer cross the road? To get to the victim's house.
Knock, knock. Who's there? The serial killer.
Serial Killer's Road Trip
Explanation
Explain Bear
Listen up, you chucklehead. This "joke" is about a serial killer, which is someone who, like, *really* enjoys killing people, so they do it over and over. The punchline is that the serial killer is at the door, ready to add another victim to their collection. Get it? It's funny 'cause it's scary, and you are dumb!