Litty tunes are songs you listen to when you're high asf. Usually songs that only sound good when you're high. Not to be confused with litty toons, which are cartoons you watch on adult swim when you're high asf.
Person 1: "Yooo turn up the litty tunes I'm tryna enjoy the high!"
The spotter/person 2: "how can you listen to this crap? 03 greedo is dogshit!"