At summer camp we had joke activities like "sand a log to nothing" and "dig a hole to China". Kids would sign up for these activities and actually sand down the log and dig the pointless hole for hours. Just as popular as playing soccer, swimming, etc. I agree this tunnel boyfriend may be on to something

That reminds me this one book I've read in my teenage years: https://en.wikipedia.org/wiki/Tunnels_(novel)

Two main characters were meeting after-school to dig a tunnel, although their motivation was a little bit deeper (sorry, I couldn't help myself) than just digging itself.

Can I use SSH?

I'm in too, doesn't even matter if we live in different cities, we can just dig a tunnel and meet in the middle

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