Referring to the moment at which an American male gets an erection in a public space and proceeds to loudly yell Freedom. This is most common throughout rural areas in eastern, and to a lesser extent western, Kentucky where it is seen as a symbol of pride in ones great penile freedom.
"To express his freshly hard penis, John performed the freedom yell. This instilled him with a great sense of pride"
by K.S. Barrlove July 16, 2018