I love the term "standing fauxvation". I've seen many in my life, and I steadily refuse to join them. The worst was at a tour of "Riverdance" which went on about a half-hour after they'd run out of material. The curtain call was ENDLESS, and EVERYONE stood up but me, making it impossible for me to flee!
I've gotten used to them at bad community theatres, etc. There, people are standing to support their friends, relatives, and colleagues who are in the show; it doesn't matter what it is or how bad they are. It is almost impossible, for example, for "The Sound of Music" NOT to get a fauxvation. One must encourage the little brats.
I ask in all honesty/What would life be?/Without a song and a dance, what are we?/So I say "Thank you for the music/For giving it to me."