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 blond finally decided to explain things, and this time she said,
"T-G-I-F, T-hank G-oodness I-ts F-riday; get it?"

The man answered, "S-orry H-oney, I-t's T-hursday".