Every week at the Mexican/US border, there was a border patrol officer. He saw the same Mexican every friday.
He was riding a bike and wearing a backpack.
Every time the same border patrol officer would stop him and ask if he could search his backpack.
And every time it was filled with sand.
Just sand.
The officer let him go,
The next week, it happened again.
The officer stopped the Mexican and searched his bag.
Nothing but sand.
One more week went by and the officer was confused because he knew the Mexican was smuggling something but he didnt know what.
The next week, the officer stops the Mexican and takes him into a holding room in the border patrol office.
The officer starts, "Okay, I know you have been smuggling something but I cant prove it, now if you just tell me what it is you have been smuggling I will let you go..."
Silence.....
The officer continues, "Was it drugs in the sand?"
Then the Mexican said, "No senior, I was smuggling bikes