a serious disorder in which the victim sings his or her favorite song then immediately has the urge to defecate expelling massive amounts of diarrhea in any place readily available.
"today at breakfast I accidentally sang my favorite song and took a shit on my sisters fruit loops, damn singarrhea."
When you are listening to music, and your mind comes up with an imaginary (fictional or not) scenario that plays in your head to a specific song. Combination of a daydream and a song that make up a story, full or not.
man: "dude you know when you're listening to some music and your mind just magically imagines a really epic scenario with your favorite characters? they're so mesmerizing, i got one recently"
another man: "what"
another another man: "YOU HAVE SONGDREAMS TOO?!"
The act of vividly imagining scenarios, stories, or emotions inspired by listening to a song or piece of music; similar to daydreaming, but specifically guided by music.
While listening to her favorite song, she slipped into songdreaming, imagining her favorite characters acting out the lyrics like it was their own story.