Lyric discussion by GamlaStan 

Cover art for No Buses lyrics by Arctic Monkeys

Absolutely brilliant, to compare relationships or flings to buses as the saying goes "buses all come at once when you're waiting for one."

He's using the same analogy here where women are concerned and telling the story of a girl he's met when he had plenty of other girls around and how he clearly just wants this one but his opportunity has gone.