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Yes they can. And you're one of the better examples of executing that.

But you don't just post a "blank" photo of a tree. Then another of a taco. Then one of an assault rifle. Then a coffee cup. In four separate posts... with not the slightest hint of what you're trying to say.

The Spanish American war.

Recess

I never realized...

sorry...
I don't know what came over me.
I just woke up..
I need coffee...