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 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 Goodness It's Friday. Get it, duuhhh?

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