FicWad

Listen, to a human or a small serpent air is as heavy as water, and to Jormungandr the world is only a house or terrarium; but his master sits by him and smiles, speaks to him and touches him with warm hands, and that is all the difference he needs.

Say nothing to him; take his master away, let time pass. Let him wait. Send Utgard-Loki back wearing his master's likeness, and if Utgard-Loki will speak to Jormungandr with his master's voice and touch him with his master's hands, Jormungandr will ask no questions. Utgard-Loki's hands are just as warm.