Ok guys let's have some fun here. I want to hear what is the strangest things that have ended up plugging your hoses. Or reducers 

I once had a dead pigeon from the batch plant plug up my 4-3 taper. 

Check this one out that ended up lodged half way in one of my 20 foot three inch. eneded up being a bone from some animal 

What is that?!? Hard to tell in the picture.  Is it plastic?

Rabbit, Fin from mixer, Beer can

Had a round electrical box cover get jammed in my 5-3 reducer hose. It jammed horizontally, of course.  Not a fun time to get that out.

Here is a couple

In Amsterdam there was actualy bodyparts coming out of a mixer one time. A human arm fell on the grate of the pump. Not actualy causing a plugg but a full stop of the poor and police and all that was involved. Not sure about all the details but what they say it was a homeless man looking for a place to sleep and climbed in to the mixer.. Next day driver just loaded the truck like always.. I don't realy buy that story and was more thinking it might have been an illegal worker chipping out the drum and passed away due to bad ventilation. Next day nobody checked if he actualy was stil in there.. but who knows, just guessing..

I'd say that wins!