Maybe not, but those dollar coins only work because they're roughly the size of a quarter. Try inserting one our old Liberty dollar coins and see how far you get.
Are you serious? First, you must be referring to a peace dollar. It looks like this:
I would never in my wildest state of drunken debauchery, ever try to put one of these silver gems into a vending machine.
But what if you were not in your normal state?
Who's fault would that be? Unless someone slipped you a "roofie"...which I would have my doubts.