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".
He smiled at her and replied "S-H-I-T".
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 blonde finally decided to explain things, and this time she said, "T-G-I-F, T-hank G-od I-ts F-riday; get it?"
The man answered, "S-orry H-oney, I-t's T-hursday".