Something Positive is one of the longest running webcomics I read. There's a good number of sections in it that involve stuff like comic book conventions, whether in the actual story or just little extras about the artist's real experiences dealing with cons. One of my favorite things from the series would take way too long to dig up, but was pretty much just a quick joke about how when he's at cons he has a hand sanitizer bottle nearby and was sort of just using it the second he let go of someone's hand for a handshake. They're just standing there getting an eye full of him vigorously burning their filth off of himself.
I was reminded of all that because at some other point, I'm pretty sure some of the main characters were at a con and were handing out free bars of soap to the unwashed masses. They needed them and sure as hell weren't buying their own.