[world2vec]

OK, I'll bite: what "other" activities? Am I being too dense? :O

[tasuki]

I'd hazard a guess the other activities involve more than one person...

[y-curious]

Imo, it looks a bit uncomfortable for chess, but whatever floats your boat dude

[nomel]

If you tilt it up 90 degrees, you can use it like a see-saw.

[quickthrowman]

Yes, you’re being too dense ;)

They’re talking about the chair being useful during sex.

[bloppe]

That chair is way too large to use for sex