Pinkie wasn’t serious most of the time. There was rarely a time when she wasn’t laughing, or bouncing, or giggling, or running, or just having a good time with a friend.
Pinkie liked to have, and be the cause of, fun.
So, when she realized Twilight wasn’t giggling at her joke, she stopped. Twilight’s scowl made Pinkie knit her own brow together. Her stomach felt worse than when she had ate the entire ‘MMMM’. “Umm…Twi? I-”
“You shouldn’t have said that, Pinkie.”
Pinkie’s ears drooped. “I’m sorry. I was only joking. I would never actually call Princess Celestia Sunny-butt.” Twilight said nothing. Suddenly finding to harder to breath, Pinkie began rapidly explaining. “It was just a joke Twilight I really didn’t mean to upset you and I won’t ever say it again and that is a super duper pinkie promise cross my heart hope to fly stick a cupcake in my eye so please don’t be mad at me because I really don’t want you to be mad and-“
A purple hoof stopped the flood of words. “Pinkie.” Twilight looked directly into Pinkie’s eyes, removing her hoof. “I wasn’t angry, really. I was shocked and only a little upset.” Twilight gave Pinkie a small smile. “If I had said anything like that, my mom would have washed my mouth with soap. I just couldn’t believe you had actually said it.” After a sigh, she looked down at the table. “It just wasn’t very respectful.”
Twilight went to pick up the sand which she had been eating, but before she could grasp it on her magic, she felt a pair of hooves squeezing her tight. “I won’t ever do it again.”
“It’s okay, Pinkie.”
“Does this mean we need to write a friendship report?” Pinkie asked, still embracing Twilight.
Twilight giggled. “No, I think this is one friendship report we can skip.”
Smiling, Twilight wrapped her hooves around Pinkie, returning the hug.