Sunday WTF?

Genesis 4:23-24

Lamech said to his wives:
“Adah and Zillah, hear my voice;
   you wives of Lamech, listen to what I say:
I have killed a man for wounding me,
   a young man for striking me. 
If Cain is avenged sevenfold,
   truly Lamech seventy-sevenfold.”