After obtaining a meat cleaver on .61 exp a zombie ran up to me and I tried spam clicking the meat cleaver at it. The cleaver killed it as usual, but after killing it it played the swinging noise every 5 seconds after that for like 20+ mins even without the cleaver out.
I did not try this with other weps or relogging - just hurry up with getting this on stable already. :)
-TeamDeer