"Oh no. I don't like you nearly enough to play 'mentor the new feather' with you. It's the most boring game known to man or beast." The illusion gestured.

At which point the hidden, real Loki snapped off Thor's pants and made them vanish. While still remaining hidden. Thank goodness for magic.

The illusory Loki grinned. "What is it the mortals like to say? Go get 'em, tiger."