There once was a man who claimed to be a flat-earther, and wanted others to send funding so he could build a rocket and fly up to prove it. He got the funding, built the rocket, flew up...
and died. I can't recall if the rocket exploded or it crashed on the
ground, but it was later revealed that he wasn't a flat-earther at
all. He just said he was so he could make them fund his rocket.