Happy Birthday Skip!
Wikipedia says:The number 40 is significant in Jewish, Christian, Islamic, and other Middle Eastern traditions; it can also represent a rough calculation, a huge sum of units, or simply put, a lot of something
The planet Venus forms a pentagram in the night sky every eight years with it returning to its original point every 40 years with a 40 day regression (some scholars believe that this ancient information was the basis for the #40 becoming sacred to Jews, Christians, and Muslims)
The Roman numeral for 40 is XL
Wikipedia has other fun stuff to say about why 40 is the new 38
HeeHee! Hope you have a great day since they are now numbered....just kidding! You aren't that old-Kim is older. Haha OK I'll stop. I really do hope you have a good day and that everyone shows you the respect someone of your age... oh never mind-I can't stop myself! :)
Have a Happy Birthday!!!