While looking up what “butter zone” means, they stumbled into a Straight Dope post by Little Nemo talking about Adam wrapped up in bubble wrap on mythbusters.
Not related, not relevant, but just mundane and pointless that I felt the need to share.
You can hide text from a mouseover by including it in a single set of square brackets [like so].
However to make this [del]bug[/del] feature work for Spoilers, the brackets must be inside the Spoiler tag (and there can’t be any more VB formatting inside the Spoiler (ie italics or bolding) or it’ll be a jumbled mess).