Possible Clues:

• He starts a fight, spattering grass with gore
• The one who attacks first
• One acting hostilely
• The one who started it
• Assailant liable to explode into gross rage
• ... which, with grass cut, is prepared for hostile invader
• Silly gag about Wossy's comeback — he started it!
• Gross rage may come from this belligerent person
• One who attacks first
• First striker whose attitude is offensive