https://wiki.multitheftauto.com/wiki/UnbindKey:
unbindKey ( player, "F1", "down", goMoo ) -- this function will no longer be triggered by the player, after removing the bind.
end
function playerSpawn ( )
bindKey ( source, "F1", "down", goMoo ) -- bind the player's F1 key to the 'goMoo' function defined above