Spelling Quiz

A business man got on an elevator in a building. When he entered the
elevator, there was a blonde already inside and she greeted him by
saying, "T-G-I-F " (letters only). He smiled at her and replied, "S-H-
I-T " (letters only). "She looked at him, puzzled, and said, "T-G-I-F
" again. He acknowledged her remark again by answering, "S-H-I-T. "The
blond was trying to be friendly, so she smiled her biggest smile and
said as sweetly as possibly "T-G-I-F " another time. The man smiled
back to her and once again replied with a quizzical expression, "S-H-I-
T. "The blond finally decided to explain things, and this time she
said, "T-G-I-F,Thank Goodness It's Friday, get it? "The man answered,
"Sorry, Honey, It's Thursday. "

I found this joke on the iPhone and iPod Touch app called 18 000 COOL
JOKES. If you liked it, check out the app. See the publisher's site:
http://www.cramzy.com