Mom: How do you spell Jessica? Wendy and me: (simultaneously, spontaneously) J-A-Y...
Mom: (confused) J-A... What?
At this point we noticed that she had a pen in her hand and was about to write down our version on a card, so we gave her the right spelling. Plus, we were laughing too much to continue.
(You probably have to be of similar descent to get this. Jessica is often pronouced "jay-see-kah")