It's National Vanilla Milkshake Day, according to

We're talking real milkshakes  —  with real ice cream (not low-fat varieties or frozen yogurt), vanilla and milk. Not chemical-laden "shakes" found at many fast food spots or a smoothie with fruit and other healthy stuff. 

The first time the term “milkshake” was used in print was in 1885, says

"At this time, milkshake referred to an alcoholic beverage which was a whiskey drink described as a 'study, healthful eggnog type of drink with eggs, whiskey and etc., served as a tonic as well as a treat.' "

"By 1900, milkshake then referred to 'wholesome drinks made with chocolate, strawberry or vanilla syrups.' A few years later in the early 1900s, people began asking for this new treat with a scoop of ice cream. It was then by the 1930s that milkshakes were a popular drink in malt shops everywhere."

Hungry? Mmmm. How about a vanilla milkshake? Grab a straw and start slurping.