I can't even believe that flat-earthers are being serious. I always thought its just a hilarious joke to a point that people are trying to defend it but only for the sole purpose of ridiculing it.

If flat earth society questions Earth being sphere, are they questioning other planets such as Mars if it's sphere too? I can not comprehend this whatever this is anymore.

actually calculate the weight of Mars by observing two lead balls through a hole drilled in the wall of a 17th century shed.