An erection, especially in response to an attractive person.
When the blonde with the 36DD chest walked by his table, Bob was embarrassed he had given her the one-gun salute.
by A.V. December 19, 2003
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To commit suicide with the intent on making the "ultimate sacrifice" for a personal cause or a belief, disregarding the thoughts, opinions, and feelings of others entirely.
He ended his life with a "Fuck you!" attitude and a one-gun salute.
by 6o66er January 5, 2009
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When 21 guys all pop boners at the same time in honor of America.
Let's get together later for a twenty one gun salute.
by Unknown37 April 9, 2016
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When twenty one guys all get boners at the same time.
"Hey let's all get together later and do a twenty one gun salute."
by Unknown37 April 14, 2016
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