I have a few
I have been known to be able to bullshit quite well when I want to, which is handy seeing as I'm training to be a lawyer.
During my early days I practiced my skills on my sisters:

Sister A was told (during the time we had AOL, *shudders*) that should you have no new emails the voice that normally told you that you have X amount of emails would say "You have no friends"

She also believed that when she got the blue screen of death that she was responsible for the millenium bug, it would now spread to other computers because of her (she was only 8 at the time so she didn't know what it really was and had only heard it on the news, it still made me and the parentals laugh though)

Sister B was told, upon accidentally deleting the internet explorer icon, that she had in fact deleted the internet.

Upon reaching adolescence I convinced my girlfriend that you could get 'jelly headaches' and that they weren't that well reported because jelly is normally eaten with ice cream, with any headache being blamed on the ice cream.

As for my gullibility?

Not to sound too cliche or anything but I believed Labour would do a good job in power.
(Evilweevil is covered in bees, Fri 22 Aug 2008, 15:40, 1 reply)

I remain
to this day convinced that jelly babies give me headaches due to a probable coincidence when i was a kid.
(Harold's hip man!!, Fri 22 Aug 2008, 16:03, closed)