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blue-on-blue

Denoting or relating to an attack made by one's own side that accidentally harms one's own forces.
The only thing more accurate than incoming enemy fire, is incoming friendly fire.
by caxwl July 8, 2004
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Blue on Blue

Referring to when a police officer testifies against another police officer in a court of law.
Its a rare thing when you have a Blue on Blue in a court trial. You can't help but think: "somebody fucked up"!
by talk2me-JCH2 April 2, 2021
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Blue on Blue

Jargon used by police (blue) to indicate they are firing a weapon and that other officers should take care to avoid getting caught in the crossfire. In the 911 call transcript of the Tiger attack at the San Francisco zoo, an officer was heard announcing a "Blue on blue".
Officer is firing, blue on blue!
by Gorn Dog January 17, 2008
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Blue-on-Blue Brutality

When an off-duty, retired, separated, plainclothes, or undercover law enforcement officer gets beaten up by uniformed on-duty law enforcement officers in marked units because they are often mistaken for criminals due to LEOSA privileges.
To prevent Blue-on-Blue brutality many agencies across the nation often require officers to provide visible identification to uniformed on duty officers in marked units during traffic stops or stop and frisk operations to avoid field interrogation cards by uniformed personnel.
by kinghiroichi1 September 25, 2025
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Left me on blue

When you are an iPhone user and you text someone and they never texted back
Damn, I was wanting to hang out but dude left me on blue
by Shapeshifter/guardians 1111 April 29, 2020
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Put Clouds on Blue Sheets

The act of cumming on a blue bed sheet, blanket, etc.
Guy: Shit, I just put clouds on blue sheets, my moms gonna fuck me in the ass now
by Fluff_Sucker_69 June 9, 2018
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death on blue legs

A clan that originates in the game called Planetside. The greatest clan on planetside, with many members and high morals. Also we have hilarity, which no other outfit can offer.
"but you teamkilled me!!"
"dont mess with death on blue legs, bitch!"
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