I wrote this filk. It's not Supergirl-specific, as it applies to any fandom, but I wanted to share.
"Spoiler Space"
To the tune of "Safety Dance"
S P O I L E R
Spoiler.
Space.
You can spoil if you want to,
you can tell us all the plot.
You can tell all your friends how the episode ends
whether we wanna hear it or not.
You can spoil if you want to,
you can be a real bi-atch.
You can open our eyes with the big surprise
before we've had a chance to watch.
And you can spoil.
(SpoilERS!)
You can spoil if you want to,
but it's a jackass thing to do.
You'll cause some contention just to get some attention
'cause its all gotta be about you.
You can spoil if you want to,
and tell everyone how the film ends.
But if bein' a troll is the way that you roll
then say good-bye to all of your friends.
And say, you can spoil, you can spoil,
plot-ruining is what you do.
You can spoil, you can spoil,
no secret is safe with you.
You can spoil, you can spoil,
steal happiness like a crook.
You can spoil, you can spoil,
reveal the end of the bo-o-o-o-k.
S P O I L E R
Spoiler.
Space.
You can spoil if you want to,
ruin all the author's plans.
Your conscience will wilt and you'll feel the guilt
of ink all over your hands.
You can spoil if you want to,
or you can find some inner grace.
Use the "Enter" key quite prolifically
and include some spoiler space.
And say, you can spoil, you can spoil,
but what's the point of that?
You can spoil, you can spoil,
if you like bein' a brat.
You can spoil, you can spoil,
or you can join the human race.
You can spoil, you can spoil,
or you can include some spoiler spa-a-a-a-ce.
Oh well, the spoiler space.
Ah yes, the spoiler space.
Oh well, the spoiler space.
Oh well, the spoiler space.
Oh yes, the spoiler space.
Oh, the spoiler space, yeah.
Well, it's the spoiler space.
It's the spoiler space.
Well, it's the spoiler space.
Oh, it's the spoiler space.
Oh, it's the spoiler space.
Oh, it's the spoiler space.