Subscribe | UPI Odd Newsletter Subscribe YORBA LINDA, Calif., Oct. 28 (UPI) -- A California elementary school said it recalled T-shirts given to students that were printed with a phone number for a sex line. Principal Jackie Howland of Linda Vista Elementary School in Yorba Linda said the T-shirts, which were distributed to students who participated in a recent jog-a-thon, featured a logo with what was supposed to be a fake 1-800 number with letters instead of numbers, The Orange County (Calif.) Register reported Wednesday. Advertisement Rosemary Gladden, public information officer for Placentia-Yorba Linda Unified School District, said a parent called the number, which was supposed to be a slogan for the event, but it turned out to be a real number for a phone sex line. Gladden said the shirts have been recalled. "It was an innocent mistake," Gladden said. "Parents have been very understanding."