Foot fault: Thrower moving feet during throw; Uncatchable throw: Deliberately throwing out of reach; False claim: Claiming a special catch that wasn't performed correctly
Why people argue about this
People often argue that a foot fault during an End Zone Exchange should result in a more severe penalty like a touchdown instead of just 1 point, misunderstanding the intention behind Section 7's clear wording which specifically calls for a 1-point penalty to discourage such fouls without completely invalidating the play.
