If you are suspicious of your knowledge, or recall, of what might have been already seen by others and not of interest, and even if not, as a kind favor to your readers, you can simply describe what they'll get when they follow your link. If you think an honest description might spoil the hilarity, you can add spoiler protection to it (for instance, this spoiler in white text, description: a glass of water atop a Mars candy bar -- ha!). Then, your readers can be responsible for deciding if they actually wish to make the link leap.

Old topic Stop the mystery links, please makes the plea and offers some suggestions to assist readers.

It's not something you (or anyone else out there reading this) must do if it cramps your style or is otherwise a burden to you; however, please don't feel put upon if others see the lack and follow up on your undocumented links with documentation -- as I did for this one.

__________________
0 1 1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 1 0 ...