I had maggots in my Yo-Go dessert once as a kid.... turned me off them for life

I once bit into a piece of Domino's pizza and bit into something hard. It was like a piece of bichemon (sp?) (road surface!).... hurt my tooth real bad too... we took it back and showed them and they gave us a voucher for a free pizza... wow geez thanks. (not!!)
How does road surface get into pizza? We could only assume it had been dropped on the road?!?! we couldnt work out what it was.

And as a young kid... Mum found a piece of white bread in the loaf that had what looked like rat poo in it!!! or possibly grease from the machine!!! we couldnt work that one out either