In the "Erecto-Phobia" segment, Peter is said to have been bitten by the wandering spider found in his grocery bag around day time (the afternoon). Through the blinds and windows in his place, you can see it is clearly night. When Peter is shown in bed with his two other ladies and dies from a heart attack in the end, it is daylight again.
In the "Fansicle" segment, the drunk Football Fanatic George is shown to have bed-head hair. But when he dies from hypothermia and freezes to death, his hair is neat and combed.
In the "Mudder Sucked" segment, senior sorority girl Harriette's hair changes from long shoulder-length (inside) to medium length (outdoors) during the mud fight.
In the "Jaw Boned" segment, Jimmy's teeth are shown clean and pearly white for a split second, then switches back to being yellow and stained.