Geneticklish

Genetic.
Ticklish.
Geneticklish.

It must be.
But why?

What evolutionary advantage is there in the ability to giggle when someone touches you?
And not even the happy kind of giggling.
More the rage-inducing kind.

Apparently, it's a useful adaptation that goes back to when sabre-toothed tigers would tickle cavemen.*
The ensuing caveman rage would enable them to survive, of course, by focusing that anger into the domestication of the tigers, as seen in any reality TV show featuring cavemen.**

Domestic.
Cats.
Domesticats.

So if anyone ever tickles you and you get mad, just pet them and they're yours.
And that's how science works.



* Tigers would only tickle the male cavepeople, let's say, to avoid the awkward usage of the word "cavepeople" as much as possible.

** e.g. "Pangaean Idol"
"Top Chef Before Fire Existed"
"America's Next Top Caveman"
"Who Wants to Be a Guy With a Big Stone?"
(That is caveman currency equivalent to $1 million today.
In fact, given the markets, a stone might be worth even more now.)