Elon Musk horrified Tesla shareholders over the summer when he revealed that his infamous "Funding secured" tweet heralding his "plans" to take Tesla private at $420 a share was, in fact, an "inside joke" between himself and his then-girlfriend, Canadian electronica musician Grimes (real name Claire Boucher). While it initially went right over the heads of the American financial press, the $420 number incorporated a popular marijuana reference (and also, according to Musk, represented a 20% premium to Tesla's share price at the time, plus $1).

Musk and Grimes parted ways not long after, but much to her chagrin, Tesla shareholders who were burned by the violent swings in Tesla's share price triggered by the tweet and the ensuing investigation are trying to drag her into a lawsuit over the tweet, arguing that she might be able to shed some light on Musk's thinking at the time he sent the tweet.