victorians
Explanation
This comic plays on the stereotype that Victorians were extremely repressed, particularly about sexuality and bodily matters. In the first panel, a character laments that "these Victorians were so repressed they can't even think about bodies for a second before we're all just purple."
The joke takes an absurd turn in the subsequent panels. Someone's phone rings, and the Victorian-era characters (or characters discussing Victorians) are so horrified by the intrusion that they slam a giant "DECLINE" button in a panic. The humor lies in the exaggerated depiction of repression: these characters are so uptight and averse to any disruption or social awkwardness that even a ringing phone becomes an emergency-level crisis requiring an immediate, dramatic response.
The comic works on multiple levels: it satirizes the historical stereotype of Victorian prudishness, while also commenting on modern phone anxiety. Many people today feel a visceral dread when their phone rings unexpectedly, especially in social situations -- making us arguably just as "repressed" as the Victorians, just about different things. The giant, dramatic DECLINE button is a visual exaggeration of what many modern people wish they could do when they get an unexpected call.