Joseph McEnroe , 36 , was found guilty of six murders last week . Slayed four adults and two children in Washington , Carnation , in 2007 . Was staying behind the house with girlfriend Michele Anderson at the time . Jury is deciding whether he is jailed for life or is condemned to death . Mumbled and giggled as he testified in a bid to avoid execution .
Joseph McEnroe , 36 , was found guilty of six murders last week . Slayed four adults and two children in Carnation , Washington , in 2007 . Was staying behind the house with girlfriend Michele Anderson at the time . Jury is deciding whether he is jailed for life or is condemned to death . Mumbled and giggled as he testified in a bid to avoid execution .