Its a phrase used during the protest for the justice of:
George Floyd, Eric Garner, Philando Castile, Michael Brown, Breonna Taylor, Trayvon Martin, Ahmaud Arbery, Tamir Rice, Walter Scott, Natasha McKenna, Kendrec McDade, Sandra Bland, Botham Jean, Oscar Grant, Atatiana Jefferson, Kenneth Chamberlain, Samuel DuBose, and many others.

The phrase was used to get celebrities and big companies to donate to the Philadelphia bail fund.
It originates in the lgbtq+, specifically the gay male community.
Kayla and Alliyah are responding to a thread on Twitter regarding the news that Candance Owens still hasn't donated and decides to call Floyd's death a martyr.

Kayla: "Yeah anyways Candance, just open your purse and zip your mouth. Since you want to use blackout Tuesday as a way to promote your dirty raunchy shit. "

Alliyah: " If you don't open your purse, I will make sure that big forehead of yours will see its last days."
by jesuslover21 June 5, 2020
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having or giving anal sex to him or her
“ ima get my bag busted open”.

lemme bust that bag open”
by _open2discussuion February 12, 2018
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the noise that a forced induction vehicle makes when the air pressure in the intake system releases under vacuum-or "letting off the gas" after you built boost.
That sweet ass Mazdaspeed_3 just open dumped on the state troopers window.
by got_boost April 22, 2010
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"How was the male on male sex?"
" Pretty wild. He sat on a plug, had me lube up my hand and forearm then I proceeded to open the wormhole"
by Farn Darngins September 30, 2020
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Picture a digital treasure trove of Earth's info, up for grabs! No need for special invites or elite memberships; it's a total open book. Satellites orbiting overhead capture epic snapshots and data, and guess what? You get full access, no strings attached.
"My grandma just texted me that SkyFi now has Open Data. How does she even know that?"
by Human of Earth July 26, 2023
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A statement Chronic Cheating Pathological Liars with multiple personalities use to gain the trust of others professionally and romantically by giving the impression that they have nothing to hide in any chapter of their lives. They often use this reference right away on a first or second encounter to set the stage and lend credibility when things just aren't adding up down the road. They may busy covering up major amounts of bullshit they produce in every direction but if they have someone convinced they are an open book then it's smooth sailing until proven otherwise beyond a shadow of a doubt. To avoid any of this if you are ever in the presence of someone claiming to be a"an open book", kick then in the balls as hard as you can and abruptly leave them screaming in agony.
"You can ask me anything, for I am an open book"
by Thrives on non$en$e September 15, 2022
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When an foreign man or woman forgets how to speak English, so using the best of their abilities, they try to point out that someone's flyer is open or that their lower half is somewhat revealed through their clothing in a way it shouldn't be.
Foreigner: Hey! Pant open!
Person 1: What the fuck does "Pant open" mean?
Person 2: Dude.. your flyer is open.
by ReddAix December 6, 2019
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