I googled “Michael Myers” for kicks and grins only to find a costume that costs $160 that’s covered in mud and comes with a butterknife… Just thought I had to share.
http://images.google.com/imgres?imgurl=http://images.buycostumes.com/mgen/merchandiser/3395.jpg&imgrefurl=http://www.buycostumes.com/browse/_/N-/Ntt-michael%2Bmyers/results1.aspx&usg=__qRaiFt2AckIUxzVfw11skVEz_d4=&h=1600&w=1600&sz=84&hl=en&start=10&sig2=FyWR7yLZvtfB4-GLO4F1hw&tbnid=Mjv2nw0Ibk6m4M:&tbnh=150&tbnw=150&prev=/images%3Fq%3DMichael%2BMyers%26gbv%3D2%26hl%3Den&ei=DggbS9-sAtDJlQfRu7zyCQ
and this odd looking knife comes with the RZ costume too!