had the same impression.
in addition to that, one of us felt a solid something in his mouth while eating the hamburger. he picked it out from his mouth and found it was a fragment of stone! he kept groaning saying that he had a pain in his belly after we came back to the office.
we have a plenty of restaurant around our office. we sometimes “explore” new places to eat like today. unfortunately, today’s adventure ended up as failure, but this is also a good experience. we will never go to that place again, and we will go out for our next adventure sometime soon. 