By that time, the cartoon character of "Joe College" came to embody the figure of the author himself, in a spirit of self-mockery and occasional empathy, and inspired by such topics as Greek Fraternities, political-correctness, "multi-culturalism", faux-political-radicalism and other typical campus trends of the early 1990's.
Joe was and remains something of a smart-ass, but don't take him to seriously.
(The last two cartoons benefit from context: the author was likewise employed in the College's Housekeeping Dept., and had the unfortunate assignment on weekends of cleaning up what was, at that time, one of the worst freshman dorms on campus -- suffice to say bearing witness to the squalor in which students dwelled (of their own volition) became a ripe target for the cartoonist ...)