One of the iconic lines in The Silence of the Lambs is of course Hannibal Lecter declaring “I ate his liver with some fava beans and a nice chianti.”
Reddit user mrcchapman points out that the line has two meanings, the literal one and a more coded message.
Lecter could be treated with drugs called monoamine oxidase inhibitors - MAOIs. As a psychiatrist, Lecter knows this.
The three things you can't eat with MAOIs? Liver, beans, wine.
Lecter is a) cracking a joke for his own amusement, and b) saying he's not taking his meds.
All those years in prison, and no one realized Lecter wasn't taking his meds. Brilliant.