At 28:21, Clark is at home talking to his parents. The first shot shows Clark's hand on a glass of lemonade in the foreground while Johnathan and Martha are in the background of the shot. Clark's fingertips are on the rim of the glass and he is spinning it. The next shot focuses on Clark and he is holding the glass in the middle part of the glass with his whole hand and is no longer spinning it.
In the United States Marine Corps it is impossible to deploy right after boot camp, there is your MOS (job) training, then you get six months noticed before you ship out with 30 days predeployment leave.
When the prenuptial agreement is shown, the names are incorrect. Luther's first name is Alexander, while his second given name is Joseph. Her full name is Deserie Allison Sanders. Even if signed, it would not be legally binding.
In the sheriff's office, the door to the jail area has no lock plate on the wall.
At the very beginning of the episode, when Lana is shooting the video for Whitney, one can see the lighting and camera equipment used for the show in the background while she is filming Clark.