How do you attach a drop box?

[iFallOutBoy]

Like many cycling forum posts, they have drop down boxes for maybe the villagers they have in their town, or which animals have been adopted from their cycling forum, my question is how do you create a drop box for people to click on?

 

[Trystin]

Do this, Without the space between the "[" and "s":

[ spoiler=Title]Content[/spoiler]

It will turn out like this:

Spoiler: Title

Content

 

[iFallOutBoy]

Do this, Without the space between the "[" and "s":

[ spoiler=Title]Content[/spoiler]

It will turn out like this:

Spoiler: Title

Content

Thank you so much!