Why Do I Even Try?

Today we had to decorate our office door for a division wide contest that will be held tommorrow. Someone brought in a lot of chips that were as a bg as a Altoid that had the letters of the alphabet written on them. Since our branch is commonly referred as "D-4" I gathered as many of the letter D chips as I could and arranged them in the shape of the number 4 and put it on the door.

Nobody got it. One response was "Why is that 4 made of out D's?"

*stunned look of disbelief at the question*

I explained and she still didn't get it. Why do I even try?