Billy Day is a holiday that happens on the 18th of every month. On this day, every living creature is named Billy. No last names, no middle names; everyone's full name is Billy. Why is this, you may ask? Life gets a bit more interesting when you can't just use a shortcut (like someone's name) to refer to whom you're talking to/about. You'll have to do what you can to make it clear to people which "Billy" you're referring to when you say "Billy."
It's been asked before, "What about someone whose name is already Billy?" Their name is still Billy on Billy Day.
(On the 18th of October)
Billy and I went to lunch today!
Which Billy?
The one with the guitar tattoo, listens to Yes all the time.
Ah, that Billy.
Yeah that's the Billy I got lunch with, Billy.
I love Billy Day!
by Bigdream August 19, 2015
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a day where a special billie eilish fan sends billie eilish goodies and we all celebrate.

holiday created by : @billie.eilish.hun (on insta)
person one: Oh my god it’s June 14th!!
person two: So?
person one: IT’S BILLIE DAY SLOWONE
by by someone else July 14, 2020
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march 12th is the day to recognize the National billy day where all the people called billy and non billys can celebrate billy day (even though they arent billy).
"hey bob its national billy day time to celebrate our national day!"
by robloxbilly120 January 6, 2023
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n. an unofficial holiday celebebrated on June 28th in honor of the death of legendary salesman and TV icon Billy Mays. It is customary to wear a blue shirt on this day in memory of Billy, due to his trademark blue shirt that he wore in nearly all his infomercials.
I need to find a blue shirt to wear. Tomorrow is Billy Mays Day.
by chris71693 July 8, 2009
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A day in which we celebrate the late Billy Mays. It's Traditional to wear a blue collared shirt with a white under shirt. Must also wear khakis. You must use CAPS LOCK the whole day. Even when talking to family or friends. If you can grow a beard by then, you are the man.
Guy1:OH MY GOD GUESS WHAT DAY IT IS!?!

Guy2: I don't even know if that was a question or a declaritive statement.

Guy1:BILLY MAYS DAY!

Guy2: There goes my ears.

Guy1:I GOTTA GO PUT ON MY BLUE SHIRT AND KHAKIS!

Guy2: what?
by MaysMan July 21, 2009
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A holiday that's origins begin in Leverett MA around 2007 AD. The day celebrates the life of the one and only, Billy Crystal. The people celebrating usually take mushrooms or acid. Scholars maintain that it falls somewhere in the first two weeks of July.
I wish Billy Crystal Day was every day of the year.
by richard gear April 27, 2009
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The Event In Honor Of The Legendary TV Pitcher Billy Mays It Is Common For Every People In America Wear A Blue Polo And Khaki Pants On That Tradition It Will Be First Officialy Observed On June 28,2019 In Honor Of The 10th Death Anniversary Of Billy Mays
Hmmmmm I Wonder What I Should Wear Tomorrow
Me:I Should Wear A Blue Shirt And Khaki Pants Tomorrow Because It’s Because It’s Billy Mays Day Tomorrow
by ThatCrazyBoiLovesMemes December 11, 2018
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