The 5th day of May....

About 2 1/2 weeks ago.....

Me: "I was able to buy a lot of Fiesta decorations because Cinco De Mayo is coming up and all of the party stores have all of their stuff out."

Mom (Mother T):  "Wait, when is Cinco De Mayo???" 

Me: "Are you serious right now, it's May 5th..... CINCO de MAYO.  5th of May"

Mother T:  "Well..... I didn't know that."