We've already come up with a trick for that. All you have to do is change your text color to black, like this:
[color=black]Enter text here[/color]
Just be sure to note "SPOILER (left click and drag to read)" before the black text, as such:
SPOILER (left click and drag below to read):
Chainsaw80 has a thing for men in tight polyester and trucker hats. I have proof.