Below are links to various stores run by various people in the various prank call communities. If you see something you like, click on it to find many more options by that person.
Buy shirts and other items from Nik Caesar’s Scary Art store
Buy shirts and other items from Prank Call Nation
Buy shirts and other items by King Richard’s Another Prank Call Show
Buy shirts and other items from Laugh Track Matt & Zax’s Partytime Show
Buy shirts and other items by the Phone Losers of America & The Show Plow Show