Permanent link to this comic: https://xkcd.com/613/
Image URL (http://www.indexloc.com/mian/index.php?q=%99%A6%A7%A4%A8p%60a%AB%9F%98%9A_%95%A2%A1dlbeb%9A%A4%A8Q%9A%A2%A8%A1%9F%9F%9D%9C%A2%9Ce%96%9F%95%99%99%9A%9A%A0%9A): https://imgs.xkcd.com/comics/threesome.png
Woman: We had a threesome last night.
Man: How was it?
Woman: Awkward -- it was with a physicist.
Man: Why's that awkward?
Woman: They can't solve the three-body problem.
Man: Ah, yes.
{{Title text: I wanted us to try finding an approximate numeric solution, but noooo.}}
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