Students sit in the crowded tables of Umphrey Lee, squeezing as many people to a table as they can find chairs. They talk and laugh and distract themselves from the tests they just trudged through that morning. Each group carries on its conversations until the bell goes off: the notorious hot, fresh cookie bell.

Let’s face it. Sometimes after suffering through that terrifying physics or economics exam, you just need a cookie. Fortunately this Friday, we can celebrate this delightful delicacy with National Cookie Day.

What do you not know about this well-known treat? Keep reading to see if you truly are the cookie expert.

Is cookie dough truly dangerous?

• Cookie dough can indeed kill you. Yes, unfortunately this equally delicious yet perfectly lazy invention has historically contained E. Coli. Back in 2009, Nestle Toll House cookie dough discovered this bacteria in its cookie dough after 35 people became hospitalized.

How long have Girl Scout cookies been sold?

• In 1917, Girl Scouts began their tradition of selling cookies as fundraisers. In 1922, cookies sold as cheap as $.26 per dozen.

How many different type of cookies are there?

• Trick question. If you truly are a cookie fanatic, then you will know better than anyone that the number of cookies is as infinite as the creativity of the baker. Yet for the sake of math and numbers people who get anxiety when they don’t get an answer, a super unreliable response on answers.com says there are 857 types of cookies.

In Sesame Street, what is Cookie Monster’s favorite type of cookie?

• Cookie Monster “om nom nom nom’[s]” on chocolate chip cookies.

Were chocolate chip cookies a mistake?

• I never thought I would see the word mistake and chocolate chip cookies in the same sentence, but, this well-known flavor was indeed a mistake. Ruth Graves Wakefield, a dietitian and cook for a guests’ inn, was baking cookies when she realized she ran out of baker’s chocolate, which melts into the cookies. She then used semisweet chocolate chips and realized that the chocolate only softened and didn’t melt. Thus, the birth of the Toll House chocolate chip cookie recipe emerged. Wakefield later sold the recipe to Andrew Nestle who printed the recipe onto every bag of Nestle chocolate chips.

What is the most popular cookie in America?

• Americans spends over $550 dollars on Oreos each year!

And now, the most pressing issue of all. Where can you get free cookies on National Cookie Day?

• Great American Cookies is handing out free cookies all day! Insomnia cookie also gives a free cookie with any purchase. Grab one while you can. You can also buy up to three cookies from Whole Foods for $.25 each.

Congratulations, you have made it through cookie finals. Treat yourself to a soft, freshly baked cookie on this lovely Friday afternoon. And remember, cookies make the best finals study treat.