Here's Day Two's Submission.
Disclaimer: I do not own A:tLA or Grease or anything fun like that.
Electrifying
They were watching Grease Sokka's all time favorite musical. Ironically Sokka had left about halfway though but Zuko and Katara were too lazy to turn it off. Currently the song, "You're the One That I Want" was playing. John Travolta was belting out the lyrics and sashaying around the carnival ride.
Zuko suddenly turned towards Katara and started singing along, "The power you're supplying it's electrifying."
Zuko shrugged unable to explain his sudden outburst. Katara just shook her head and tuned back the musical. But when Olivia Newton John began singing again she too burst into song, "You'd better shape up. 'Cause I need a man and my heart is set on you."
The sudden desire to sing overtook the pair again and again until the song was over. As the music faded away they discovered that they were now kneeling, facing each other, hands clasped. They quickly dropped hands and looked sheepishly at each other.
Zuko then cleared his throat breaking the silence that descended upon them, "Next time Sokka wants to watch that movie, I say we chuck I tint eh bin where it belongs."
Katara agreed saying, "Definitely." But at the same time Katara couldn't help but think that the lyrics, "You're the one that I want," were true. And unbeknownst to her Zuko was thinking the same thing.