A faceplam is a facepalm that, unlike a facepalm, is for a much stupider reason, like if someone says "Hey look, a flying shark".
Another faceplam reason would if someone is just simply stupid. For example: if someone points out something you already know for the 50th time.
Bob: Hey Joe, did you know that dogs are canines
Joe: THIS IS THE 50TH TIME YOU TOLD ME THIS *faceplams*
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