Yep, it's FLAT! If you DONT think the world is flat then ask yourself 3 simple questions.
1. Why is the sky blue?
2. Why does thunder echo?
3. What makes rainbows?
Don't you find it amazing that you and everyone you know are completely unable to answer any of the three simple questions. Oh yes, you can bull $#!+ a kid but you can't REALLY answer these questions and you never could. WHY?
1. sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.
2. Why does any loud sound echo...a sound is repeated because the sound waves are reflected back. Sound waves can bounce off smooth, hard objects in the same way as a rubber ball bounces off the ground.
3. by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicolored arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun. And from high altitudes rainbows form multicolored rings.
Edit: Even IF we couldn't answer those questions i fail to see how that support the claim of a flat earth.