Soléy rolled her eyes. "Don't call our dog a shithead, shi–" she caught herself just in time and bit down on her lip. Holidays, being cooped up at home with the boys all the time were proving to be a bad influence on her. She petted Tawny absentmindedly and let her off her leash after she's done fawning over Alvar. She knew the dogs couldn't understand what her brother actually said, but she had a suspicion that even if Tawny did, she'd still love him unconditionally.
She raised an eyebrow at him, but daintily—and obediently—unwrapped half of her sandwich and left it in the sand. She had to shove away Mars' sniffling nose with her foot, but the sandwich was gone in no time. Carefully, she took off her sandals, placing it somewhere where it won't be lapped up by the waves, and edged closer to the water where Alvar was. "At you? Gladly," she said drily. The 'just kidding' was implied; she'd never really do that.
Feeling slightly self-conscious, she scoured the sand around her for something to throw. Apparently boys did that a lot, just throw things at other things, or even into nothing. She saw their father do that sometimes, even when he was alone, and she could never get the appeal of it. A part of her thought it was stupid, but Alvar never really asked her to join in on things; most of the time they just coexisted in relative peace, and while that suited her just fine, she didn't want to seem like she was not 'playing along'.
It felt almost like a ritual. Or an initiation. Maybe if she could do this right, she'd be accepted into some exclusive club she normally wasn't privy to. The rock that Alvar handed her was smooth, shiny black. She couldn't be bad at this, he said so himself. Why did this feel so important all of a sudden? Why did she care what he thought of her?
The rock—pebble, really—hit the surface of an oncoming wave, then sunk back into the sand with a small, anticlimactic little plop. Soléy buried her toes deeper into the warm sand, and tried not to look too disappointed. She expected that to be more fun than it actually was, but maybe that was the problem, she put too much expectation into it. It made her feel sort of like a fraud, even more so than usual, looking at her older brother who seemed to be able to enjoy this for what it was.
"That's..." she started lamely, "alright? I probably did it wrong." A part of her, somewhere deep in her subconscious, was sort of beginning to understand why boys thought doing things like this was a good time, but the girl on the surface was struggling to keep the sudden rush of humiliation at bay. A pause later, she spoke again, trying her best to seem as nonchalant as possible, "I'm surprised you even let me join you. I thought you never let girls join in on the... things you usually do."