I told you so.

It wasn't just a quirk of photo manipulation! The frogs, they REALLY rain!
Even the World Almanac for Kids 2007 says that its possible! Look!:

RAINING FROGS: Yes, it can happen. On many ocasions, it has been reported that frogs, fish, and other small marine animals have rained down during a storm. This is likely caused by a waterspout or tornado that picks up animals from one spot and drops them down in another.

This is much more percise though! See:

Frogs

• In 1873, Scientific American reported that Kansas City, Missouri was blanketed with frogs that dropped from the sky during a storm.
• Minneapolis, Minnesota was pelted with frogs and toads in July, 1901. A news item stated: "When the storm was at its highest... there appeared as if descending directly from the sky a huge green mass. Then followed a peculiar patter, unlike that of rain or hail. When the storm abated the people found, three inches deep and covering an area of more than four blocks, a collection of a most striking variety of frogs... so thick in some places [that] travel was impossible."
• The citizens of Naphlion, a city in southern Greece, were surprised one morning in May, 1981, when they awoke to find small green frogs falling from the sky. Weighing just a few ounces each, the frogs landed in trees and plopped into the streets. The Greek Meteorological Institute surmised they were picked up by a strong wind. It must have been a very strong wind. The species of frog was native to North Africa!
• In 1995, reports Fortean Times Online, Nellie Straw of Sheffield, England, was driving through Scotland on holiday with her family when they encountered a severe storm. Along with the heavy rain, however, hundreds of frogs suddenly pelted her car.

From about.com. See the full article here.

What did I say, huh? What did I say?