If you hear random laughing it's not a ghost, it's just Alexa. Over the past few days, users with Alexa-enabled devices have reported hearing strange, unprompted, creepy laughter. Amazon issued a statement to The Verge, saying, “We’re aware of this and working to fix it.”
And just in case you are like me and you're still trying to figure how to set your Alexa up. Check out this video.