Written to: Closer to Love - Mat Kearney, crosspost from AO3.
Skinship: Bonding through the intimacy of touch, especially of the closeness between a parent and child. Can also connote 'sharing a bath naked,' but more often has the platonic context.
Loki walks into the baths one evening to find Thor and Modi already ensconced in a tub, warm, bubbly water slopping over the sides as Thor shifts Modi from one arm to the other to reach for a damp washcloth.
Loki gingerly perches himself on the edge of the tub, watching as Thor gently pats Modi's cheeks with the washcloth and runs careful fingers through Modi's damp curls, which have darkened to a bronze colour under the warm water. Modi squeals with delight when he tilts his head back and sees Loki sitting at the edge of the tub, reaching out tiny, soapy slick fingers to him. Loki smiles and obliges him, holding out his hand and allowing Modi to wrap his fingers around his thumb.
Thor looks up. "You are far too dressed," he informs Loki, and before Loki knows it, Thor is kicking a small swell of water over the edge of the tub, soaking Loki's trousers. Loki jumps up, frowns at the water dripping down his legs. Thor just smiles good-naturedly at him, his grin widening as Loki rolls his eyes, peels his sopping trousers off his legs before wriggling out of his shirt and tossing the clothes in a disgraceful heap on the floor.
Thor shifts his legs to one side as Loki clambers into the tub, causing more water to slosh out over the tiles and disrupting the thin film of bubbles on the water's surface. Loki settles himself into the tub, reveling in the warm water against his skin that reaches up to the hollow of his throat. Modi splashes at the water with his hands as Thor beckons Loki to move closer so that he can wash his back for him.
They spend hours in the tub, their skin turning wrinkled and pruny, and Modi gasps in delight as Loki puffs his cheeks out and blows across the surface of the water, using his seidr to blow fresh, fat bubbles that pop against Modi's cheeks and eyelashes and his questioning fingers.
Thor wraps an arm around Loki's shoulders, and Loki rests his head in the hollow of Thor's neck with a smile while Modi squeals and laughs and splashes between them.