Often, I listen to Pastor Carl Brogie of the "Search the Scripture" ministries on my local Christian AM radio affiliate.
He was having a 2 month series on the Book of Daniel, and when he got to the portion that dealt with dreams and prophesy, he said, "Now, if someone were to tell me that they've had a prophetic dream, the first thing I'd tell them is that it's probably just indigestion, and they should lay off the pepperoni pizza right before bed."
Yes, but it can be examined to see if it meets the test that God lays down for a prophetic dream too. If it does, wow! If it doesn't, then it can be discounted.