Today’s strip features the two dippy Crankshaft girls in a phone-related joke intended to show just how stupid the two of them are. It succeeds on that level, I guess. Otherwise, it’s totally unrelated to anything else in the strip. I guess it’s remarkable in one sense that it shows their father, but I don’t know enough about their appearances in Crankshaft to know whether he’s ever been shown in the past. I think their mom showed up at some point.
Have at it!