Actually skilled players know many forms of spam.
Clueless spam, drunken spam, the omg-he-was-backstabbed-and-turned-around-i-can-finally-release-rmb-huscarl-shielder-spam, spam because your weapon is better, spam because you chambered, spam that causes chambers, spam because it rains, bastard sword spam after your third shield broke (my personal favourite), and many others.