Zac Efron’s Gassy Mistake

Zac Efron thought he was suffering from gas when he had appendicitis.The 21-year-old star, who was filming new movie ‘17 Again’ when he was taken ill last year, claims his co-star Thomas Lennon didn’t take his ailment seriously and urged him to take digestive supplements for trapped wind. He said: “I didn’t know what it was at the time and I was ju…