Jeremy ("Germy") is using a small hand-held camera with a lens that is only two or three cm wide, yet when he is wiping his spittle off it we see his whole hand and part of his arm, indicating that he is wiping spittle off a sheet of glass, not the actual camera lens.
When Valerie's TV monitor falls it has no power cord attached, so it couldn't actually work.
When the monitor fell on Valerie, she said she was okay. In reality, she would have been extremely hurt.