Pranking Sikowitz is a video on TheSlap. In the video, Beck, Cat, Tori, and Robbie prank call Sikowitz at 1:30am after studying for a test at Tori's house.
After Tori, Robbie, and Beck spout random nonsense, Sikowitz says "I...I think maybe you have the wrong number" to which Cat answers "We don't have the wrong number mister, you do." Exasperated Sikowitz asks "Who are you?" and Cat reveals who they are by saying "It's Cat! And...and Beck and Tori and Robbie...Shapiro!" Annoyed, the others step out of frame, leaving Cat to happily inform Sikowitz of their depature.