“Eheheh!  No, you are an idiot!”

Loki flashes his tongue between his grinning wolf teeth
and dematerializes, his form vanishing like a needlepoint
being unraveled until the image vanishes wholly. 

     “I’m still heeeere,” the invisible Trickster calls, quite carried away
      by a rare sensation of childish play, with the person beside
      whom he was raised. 

Thor will feel a tug on his eye patch, and a yank of one stick from one 
hand, the better to bop him one upon the skull. 

Loki drops the stick then, and goes very still, bemused, wondering
if his big brother will be able to suss him out.