Blond Joke - what's today?

T-G-I-F vs.S-H-I-T

A businessman got on an elevator.
When he entered, there was a blond already inside who greeted him with a bright,
"T-G-I-F."

He smiled at her and replied,
"S-H-I-T."

She looked puzzled and repeated,
"T-G-I-F," more slowly.

He again answered,
"S-H-I-T."

The blond was trying to keep it friendly, so she smiled her biggest smile, and said as sweetly as possibly, "T-G-I-F."

The man smiled back to her and once again,
"S-H-I-T."

The exasperated blonde finally decided to explain.

'T-G-I-F' means 'Thank God,It's Friday.' Get it, duuhhh?"

The man answered,
"'S-H-I-T' means 'Sorry, Honey, It's Thursday'-- duuhhh."