Beowulf begins with "Hwaet." I was talking with emilya, and she confirmed it was basically the Old English spelling of "what", but meant something more like "Listen" in context.
If we do a hip-hop translation of Beowulf, we could begin with "Yo!"
Yo! Spear-tossing Danes are downright special.
Famous for sure are the kings of those folks.
Their royalty really knows how to rumble.
Scyld was a killer, skilled in collecting
Bodies of soldiers from off their beer benches...