Promises doubt ES6 Lecture 7 JS2

#1 
function download(done) {
    setTimeout(function () {
        console.log("Wait is over...");
        done("downloaded the game..");
    }, 10000);
}

download(function (message) {
    console.log(message);
});

the above works as intended
but when i change the anonymous function to just a normal function the output isnt the same i.e. the delay is not there!!! why???

function callme(done) {
    console.log("Wait is over...");
    done("downloaded the game..");
};

function download(done) {
    setTimeout(callme(done), 10000);
};

download(function (message) {
    console.log(message);
});

basically in the second code i changed the anonymous function to a new callme function…