And if he landed on your worm's head? or piled it without moving it? It looks like you would still try to zook kill, right? I'm sorry, I don't see much advantage/disadvantage for either TheKiller or you from this knock.
I understand you getting upset/frustrated after your zook failed, but this is the risk of playing elite outside of #PartyTime. I know it's annoying to change channel just to play elite, but if these little knocks are more annoying to you.. then maybe #PartyTime is the best channel to go. Most people playing elite in #AnythingGoes know that these little knocks are possible.. and unless the knock is a huge difference, players usually agree to let them be ok.
Any other mods may post if they disagree.