This concept might seem a little dark for Sam and Max, but was Max, on a subconscious level, feeling suicidal? It seems that Max felt disgusted with himself and his lifestyle and wanted it to end. But Max, being a postive lagomorph, repressed these feelings and never showed them to anyone(and seemed to be unaware of them himself).This Self-disgust was eventually personified as the Superego, who acted out Max's suicidal urges. But, like l said before, this idea seems a bit dark for such an upbeat series, and I'm probably overthinking it. Still, let me know what you guys think.