Beware, O my brothers and sisters, for upon your humble internet false Jenis do abound! To assist you as you wander through such a scary and deceitful world, your narrator dost hereby proclaim several signs of the real Jeni.
1. The Real Jeni does not talk in cheerleader speak, in which numerous exclamation points and words like "bestest" abound.
2. The Real Jeni avoids unsightly grammar errors and typos.
3. The Real Jeni speaks in a sage-like voice.
4. The Real Jeni possesses every imaginable virtue.
I do hope that such principles shall help you distinguish the best of all possible Jenis. Good day.