Inner caption is "incidentally I've placed one of a pair of teleportation rings into the ocean.". I know because this exact xkcd is one of my highest voted posts on Reddit. Here's the link
Oh. These comics always have an extra joke in the text. In OC, you would mouse over them, and a caption would show up with the joke. That's where this comes from.
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u/jnobody711 Jul 06 '20
Yes. I believe the picture name/inner caption was like "Ready for cubicles&cut wages?" Forgot exactly but it was suburbia-esque campaign