Eventually he inhales incorrectly, coughs, has to course-correct to avoid running Ekador off the road, and stops whistling.
Aleko yells into the carriage, "Hey, it's super hot out here!"
"What?" hollers Kiri faintly. Intermittent words of the next utterance are audible and include "not", "Sarelle", and "hear you".
Rather than reply, Kiri just fixes it. Now it is pleasantly cool.
"Yeah. She'll probably forget to keep it up in like half an hour since we're moving and she has to move the not-so-darn-hot area with us but whatever."
"Yup. Unless I manage to choke myself to death trying to whistle, that'd kinda interfere. I couldn't whistle at all till a year ago, then I got the knack of it."
Aleko smirks, a little, quickly, then stops. He doesn't seem to smile much at all until provoked into uproarious delight.
And now, absent distractions, he's thinking again.
"You look like you're trying to write a poem with a really complicated rhyme scheme in your head."
"Song lyrics? Short allegorical fiction? One of those Berringese number puzzles?"
"If you must know, I was thinking about how very obvious it is when you tease your sister about being sweet on me, and wondering whether or not to bring it up in case you hadn't realized."
"I did miss it the first time," he adds, in case that's any comfort. "But not the subsequent two."
"I have also teased her about it when you were not present, so that improves my ratio?" suggests Aleko. "I'm also not positive, she's the one who reads minds, not me."
"I will have to find some even subtler method of teasing her than not saying anything, this is going to be a hard one."