TGIF
A blonde gets in an elevator and sees a man standing there. She tells him, "TGIF, sir," to which he replies, "S-H-I-T, ma'am." Surprised, she replies, "Excuse me, I was just trying to be nice , TGIF stands for 'Thank goodness it's Friday.' The man replies, "SHIT stands for 'Sorry honey it's Thursday.'