A name used by people named 'Jessica' because they don't like being called 'Jess'. Mostly by losers who think they're different or special but in actual fact, they're just sad people who don't like it when someone calls out 'Jess' and it's not for them.
Person 1: Hey Jess!
Person 2: Don't call me Jess, it's Ica!
Person 1: Well I wasn't calling you anyway, I was calling the other Jess.