A businessman got on into an elevator.
When he entered, there was a blonde 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 blonde 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 at her and said 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, and "S-H-I-T means 'Sorry, Honey, It's Thursday.'"