While the fact that Sylvester's last action before having his brain carved out was to ask the villains where Pat was and if they'd done something to him is a Heartwarming Moment, the already nightmarish circumstances under which it happened are made worse by Sylvester's Brain in a Jar constantly repeating this same plea. Then it gets even worse when you realize that this final thought of Sylvester's is short enough that it only takes a few seconds to play out and he's been in the jar for nine months, so it must have replayed an uncountable number of times.