James (getting ready to go spend the night at grandma's house): Bye, Mom! Miss you!
Mom: Miss you too!
James (blowing Mom a kiss in the chill air): Catch it!
Mom (miming): Caught it! Hey, look! You can see your breath!
Mom (blowing a kiss back to James): Hey, look! You can see my kiss!
James (slight pause and shift to peppy, informative tone): We're actually seeing water vapor.