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.
41👍 10👎
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.
4👍 17👎
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.
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."