The trees are great though.

Unless youre Russian.

Now playing Sabaton - White Death

There is no innuendo if you are looking for an innuendo. He's literally talking about shaking the rain off an umbrella. He's happily married and neither his wife nor he like to dance so they don't shake anything but their umbrella. Get it?

What else do you shake on a fairly common basis, I suppose you also shake the bottle to get every last drop out. So it's bottle or umbrella.

Finnish people do not shake hands.

Sharing doesn't sound possible, or at least would require an unwieldy parasol or something.

I think you're confused why he brought up shaking anything at all, what you're missing is that he brought up shaking an umbrella as a reply to the OP image that talks about shaking booty aka dancing.

The Finnish thing is that they don't shake booty. The umbrella being the only thing they shake was just a way to highlight that they aren't dancing like Colombians.

Yea finnished being in the rain

It's worldwide. Everyone around the world who has used an umbrella has shaken rain off an umbrella. Are you an alien from another solar system?