My Hispanic friend in deep South Texas invited me to a real deal Mexican cookout for Tripas(fried pork intestines) y Mollejas(fried beef pancreas) one night.  He neglected to inform me that he didn't clean the Tripas like you would if you had them in a restaurant.  I bit into it and got a mouth full of pig shit.  I proceeded to throw up behind the fence and started cursing him for being so nice to invite me to his cookout.  He thought it was funny to see a gringo eat shit and freak out. I still get nauseated every time I think about it.