Mr. Creosote?
Why was Mr. Creosote sick at his stomach in the first place? When he first arrived, they asked him how he was feeling and he said "better...". Obviously, he had been ailing before, and should have stayed home until he was completely over his illness.
Supposed he wasn't ill. He could have come in, sat down, eaten "the whole lot", kept it all down, and finished it off with his "wafer thin mint", and then exploded all over the place.