Recording
Explanation
This comic takes the concept of recording glasses -- wearable technology that records your perspective during an activity -- and applies it to sex in an uncomfortable way.
In the first panel, a couple puts on "recording glasses" before having sex so they can watch each other's perspective afterward. They are enthusiastic about the idea.
The "later" panel shows them in bed reviewing the footage and reacting with discomfort. One observes: "Boy, there's a lot more staring directly up the nose than you realize in the moment." Another notes "and sweat and spittle." A third observation is "Christ, was that elbow always there?"
The punchline comes in the final panel where one person compares the experience to Twitter (or social media more broadly): "This is like that thing where everyone's hideous and nobody realizes it." The metaphor suggests that sex, like social media, is an activity where everyone is somewhat grotesque from the outside, but the participants are too caught up in the experience to notice. The mutual agreement not to acknowledge the awkward physical reality is what makes the whole thing work.
The red-button panel (the bonus panel shown with the character by the fire) reinforces the joke. The comic plays on the gap between how we imagine ourselves during intimate moments versus the unglamorous physical reality -- a theme Weinersmith returns to frequently. It is also a commentary on the folly of applying technology to experiences that work precisely because of their subjectivity.