Panel 1: Now that they've hit the road in Gord's dad's old beater of a half-ton, Mike asks Gord where they should go. Gordon says "You name it"...which leadeth the fungus person to talk about the blind leading the blind.
Panel 2: Gord reminds Mike that now that they've got sixties drivers licenses, the possibilities are endless. Mike empathetically agrees.
Panel 3: Gord then says that they don't hafta hang around here any more. They can blow Milboring and go anywhere on the planet. This sets up a one-two punchline at their expense when Mike asks when Mr Mayes wants his beat-up old truck back.
Panel 4: It turns out that their infinite freedom has a time limit of ninety more minutes.
Summary: We're supposed to forget the "He gets drunk an'hits me" stuff until the next time Lynn wants to bring it up. We're re just supposed to laugh at callow youth who think they're hot shit in a champagne glass instead of cold diarrhea in a Dixie cup.