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I don't understand your point. Caches (other the trivial ones) are organized into "ways". A given access will map into one of the ways of a set. The title is punning on "take a way" and "takeaway".

It's British for takeout, carry-out, or whatever you want to call restaurant food you pick up yourself.

Not quite - it's "take away", not "take a way" as used in the article.

The joke is that way prediction involves reading one way of a cache, not from the way jar, but from a set. Caches are divided into sets and ways in CPUs.