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

A business man got on 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 sasid 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 Goodness It's Friday." Get it duhhh?
The man answered , 'S-H-I-T' means "Sorry, Honey, It's Thursday"
---duhhhh!