When Marcus comes home from work he tells Gina it is only 8:00. Gina then says she called the bar, Marcus and Kevin left at 7:45. She also said that MapQuest said it only takes 6 minutes to get from the bar to their house. Marcus says he got there in 8 minutes which leaves 2 minutes unaccounted for. However, if they left at 7:45 then it would be 7:53 when Marcus came home, not 8. That leaves 7 minutes unaccounted for, not two.