I can imagine Sunset having took a “Slight” bonk to the head, thinks shes a foal, and wants to play. Meanwhile Twilight is thinking “Please of PLEASE DEAR CELESTIA, find a way to fix her SOON!”
I would like to point out that in Season 2 finale due to Discord’s trickstery, Twilight has been carrying TOM on her back for Rarity (1.5 - 2 tons of weight), and as alicorn her psychical strength should increase more. Long story short, it seems inacurate to make jokes of Twilight not being able to lift any weights when she is able to carry up to 20 ponies on her back.
Sunset: “At least I tried! And unlike you, I don’t eat books.”
Twilight: “Says the pony who was unable to run the width of a sports field without getting winded~”
Edited
20 minutes? This looks as if it was 12 hours later. Twilight isn’t that weak.
Twilight is more than capable of carrying Shimmy, the problem is that this is about 20 miles later.
Rule of Funny.
Guess it should have been,
“Sunset Slimmer”