Pretty sure at this point that even Karkat has him beat in the height department. He's been going through growing pains recently, after all. Luckily, John understands exactly what she's getting at.

"Nonsense! You say that like I haven't been dancing with those less vertically challenged than me all night. Here, just..." He attempts to start leading Kanaya into whatever sort of dance best fits the music. Or well, the one he thinks fits best. And true enough, he seems to have figured out a few tricks to compensate for his height deficiency. Granted, Kanaya is a bit taller, if not the tallest, person he's danced with all night so he'll probably have to make a few more adjustments as they go...but he is determined to make this work.

"See? Totally doable. We got this."