Kay: I would really, REALLY love to talk theater understudies/swings/standbys either this week or... well, SOON. Not sure if you're aware of the scuttlebutt over at "My Fair Lady" ... Lauren Ambrose is handing Sunday matinee shows to her understudy. And her costar Diana Rigg decided to shame her for it:https://nypost.com/2018/07/05/diana-rigg-annoyed-that-my-fair-lady-star-is-taking-sundays-off/Then this column came out and REEEALLY got me thinking:http://www.onstageblog.com/new-blog-1/2018/7/12/i-never-call-out-is-the-theatre-equivalent-of-most-of-my-friends-are-guys