While you wear this cloak with its hood up and are sitting on the shoulders of another humanoid no larger than one size of you, you gain Advantage to Wisdom (Perception) Checks and a +1 bonus to attack rolls. While using the item in this way you also can't be knocked off the humanoid's shoulders against your will if you're conscious.

Curse. The hide is cursed, and becoming attuned to it extends the curse to you. As long as you remain cursed, you are unwilling to part with the hide, keeping it within reach at all times. When you sit on the shoulders of another humanoid with the hood up the curse also temporarily extends to that humanoid. 

If you remain sitting on the humanoid's shoulders for two consecutive rounds they must succeed on a DC 15 Wisdom saving throw or go berserk. While berserk, they must use their reaction at the end of your turn each round to attack you, they make this attack with advantage. With berserk in this fashion you are unable to willingly dismount from the shoulders of the humanoid. At the end of each of their turns they may reattempt the Wisdom saving throw again, on a success their berserk ends and you can willingly dismount again.

In the early days of the world, Man stood by the banks of a river, frightened. Crocodile raised his head from the water and asked, “What troubles you, cousin Man?”
Man said, “I must cross this river, but I fear to enter the water alone, because it teems with your brethren.”
Crocodile replied, “It’s true, you would not be safe. But I will carry you across the river safely on my back, if you promise to return the favor.” Man agreed, and Crocodile bore him safely across the water

When they reached the far bank, Man asked, “How can I repay you?” Crocodile replied, “I wish to see the realm of Humans, but I fear to go there alone, because it teems with your brethren. You must carry me on your back across your realm.” Man had been tricked, but a promise is a promise, so he carried Crocodile safely on his back across the entire realm of humans, a journey that lasted many years. He also swore, in his anger, that never again would Men and Crocodiles be friends, and so it has remained to this day.