Acronym for Builders League United the BLU team for Team Fortress 2
BLU Spy: Off to Visit your mother *laughs in french*

RED Scout: No
by Chew how feel Gum it Five November 10, 2021
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blu, an amazing and so cool freind bou is so hot and cool and amazing bku has mannnyny friends but never lets go of the real ones aka me and ber and mark and cheesy and eberyone nickname can be bluss or just blu u decide but anaywasys hes so amazing and cool firned never forget how lucky u are to have a Blu.
blu is so cool and exiting am have sleepover with him
by balsus January 8, 2022
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Blu is commonly known as an aincient dragon that lives dormant in it's cave under the sea. A few decades ago, Blu came out of his sea prison and attacked part of Eastern China.
We'll all be doomed once Blu comes out and attacks the Earth again.
by idonia November 25, 2019
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Enjoys fat cock
That gay must be a BLU
by Blu6996 October 8, 2019
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Blu. Mcr stan and unbearable. In love with the everglades guy.
“Blu is often used as a target for vase throwing by their mother.”
by Dazailexa October 4, 2023
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