Yuputka: The phantom sensation of something crawling on your skin.
"Mama?" Modi's voice is unnaturally quiet, and Thor is a heavy sleeper, but Loki presses a finger to his lips anyway, telling Modi to shush. The two of them have decided to get up to some mischief, of the most childish kind. Loki has coated Thor's palm with whipped cream (and what a struggle it was, trying to get Modi not to lick all of it off before the trick was played, the child still needed some lessons in patience and the concept of delayed gratification).
"Mama, this okay?" Modi asks, reaching out and punching Thor in the side, as if to make sure he really is sleeping. Loki pinches the bridge of his nose in exasperation, struggling not to laugh as Thor only grunts and slips further into sleep.
Hesitantly, Loki reaches out over Thor's nose, tickles it with a large feather. Thor twitches, muttering something about chickens crawling over his face in his sleep, before reaching up and slapping himself in the face, to rid himself of the phantom chickens that have taken up residence on his head, smearing cream all over his beard and face.
Modi cannot hold in his laughter, and he squeals in delight at the sight of his silly papa. Loki smiles at his son, ruffles his hair, and takes him by the hand to lead him to the kitchens for a midnight snack, leaving Thor with cream-smeared face still fast asleep.