The Kirk and Cynthia sketch/story kinda reminded me of some of Gary Larson's Far Side comics, the ones without dialogue, a snapshot accompanied by a weirdo explanation of what was happening.
The difference here perhaps is that the story went on just a little *too* long, resulting in deflating humor levels.
Maybe I was expecting a punchline, but it's a gentler kind of funny. More like a sitcom, where you have to get involved with the characters and watch the entire episode. (Er... if that makes any sense whatsoever.)
So yeah, sketch blog is probably right. Comic, not so much.
Caveat: what the heck do I know?