The next morning, Potter returns, but is still mum about who he calls his "sick friend." After telling him about the kids' rash, Potter figures out that its because of their diet--they eat horse meat, which is causing a reaction to the tetanus serum.
After a tossed off joke by Hawkeye, Potter goes on a rant about the atrocity of people eating horses, reminiscing about, back in WWI, "A man's horse was his best friend--where do people get off turning them into porkchops?" It leaves everyone stunned into silence, and Potter mumbles an apology and leaves.
