The sexual practice of inserting apples into one's rectum or vaginal cavity. In some cultures, the practice is done as a way of measuring one's sexual value. i.e., the more apples that fit into one's body cavity, the more desireable he/she is to sexual partners. Besides the number of apples, the size and quality of the apples used determines whether the person will be considered desirable in bed or not.
After John tried appling for the first time, he was suprised to find out how bad it hurt to crap out a giant apple. It also gave him a pink sock.