Have you ever done the "if your hand is the size of your face you are a genius" thing to a friend, and then when they put their hand up to their face you slap their hand, causing them to slap their own face?
I almost fell for that, and then I remembered the whole "gullible is written on the ceiling thing" and I didn't do it, but I laughed at how stupid it would be if I did
I'm so gullible all the time, it might hurt me someday lolz
It's hilarious, but not for the other person
I'm so gullible all the time, it might hurt me someday