Originally published on my long-defunct Livejournal.
Watch the film version of South Pacific and take a drink every time the world changes color.
Listen to the cast album of Evil Dead the Musical and take a drink every time there’s a line that doesn’t even come close to rhyming.
Bring out the karaoke and take a drink every time someone forgets a lyric; alternatively, take a drink every time one of the queens shrieks “I was going to do that song!” when someone else gets up to sing.
Read selections from a novelization of a musical (my suggestion: the novel of Grease, by Ron DeChrisophero) and take a drink every time a song is awkwardly conveyed in prose.