Despite having four bodies lined up in front of him at the morgue, and the fact that seeing a murder would destroy the appetite of most men, John seemed to have no problem eating the burger he'd picked up along the way. And although all their victims had fallen to various meat-related poisonings, John felt considerably safe because he reasoned that fast food wasn't really made of real meat at all. He watched Sherlock inspect the bodies, answering questions when he was needed and confirming symptoms when asked about the poisons.

Molly, who observed them from the lab table, had offered them some information and some paperwork-- as well as a polite "You're not allowed to have food in here, you know," Which John had just nodded along with and ignored.