While discussing Karen getting knocked out during their wrestling match, Peter says that pro wrestlers usually use fake chairs as foreign objects, but they are, in fact, all the real deal; chair shots are one of the easiest blows for wrestlers to "sell" - the performance of making it look more devastating than it actually is - and the reason is because they really do hurt.
Lois brings home a frozen turkey saying that "there's nothing worse than grocery shopping the day before Thanksgiving". In actuality, Lois would not be able to cook that turkey as frozen turkeys take several days to defrost.
Peter recants a story in which he was afraid to tell a cab driver where he lived, so he told the driver that he lived at the White House. The taxi then took him to the White House, dropped him off at the front door and waiting until he could go inside. Automobiles are not allowed to drive up to the White House and Peter would have been dropped off further away.