How do I use expression with bulk insert using npm mysql?

This question answers 99% of what I am looking for... How do I do a bulk insert in mySQL using node.js

var sql = "INSERT INTO Test (name, email, n) VALUES ?";
var values = [
    ['demian', 'demian@gmail.com', 1],
    ['john', 'john@gmail.com', 2],
    ['mark', 'mark@gmail.com', 3],
    ['pete', 'pete@gmail.com', 4]
];
conn.query(sql, [values], function(err) {
    if (err) throw err;
    conn.end();
});

If I want to pass an expression, such as NOW(), how would I do that? If I pass it in the array, it would count as a string. Since VALUES is a ? that gets populated by the array, I can't easily inject an expression. Any ideas?

via Dave Stein