Rainbow Dash: Now I'm sure that making dresses is just like riding a bike.
Rarity: It absolutely is not.
Rainbow Dash: But just give it a shot, and you'll be back in action in no time!
Fluttershy: Ponies don't ride bicycles, do they...?
Twilight Sparkle: Maybe it'd be more of a scooter-type device?
Rainbow Dash: Hey, I'm trying to do a lesson-thingy here! My point is... Applejack's a hard worker, but you can't farm fabric to get dresses.
Applejack: ...Well, she's got me there.
Rainbow Dash: You're creative, you're totally suited to this! Heh, "suited." So just go for it!
Rarity: Your simplistic confidence in me is... bizarrely encouraging, Rainbow. Thank you. Hey there, Applejack.
Applejack: Oh. Hey there, Rarity. Sorry about the fashion disasters.
Rarity: It's... nothing, really. Mind if I take over for a bit?
Applejack: Sure, Ah'll get outta yer way. Thanks fer not stabbin' me with scissors or somethin'.
Rarity: ...Now why would you ever suspect such a thing?
In retrospect, it's not very often that I go for a punchline with a visual element, but sometimes a screencap provides an opportunity that I can't pass up.
I don't know how many times I've seen this episode, and I'd never noticed the scissors poised for the backstab before. Well played, Rarity. Just don't yell "SNEAK ATTACK!"
Generally I'll watch the scene at normal speed if I'm not familiar with all the shots in it, then I'll hop the scroll bar back and forth to speed through it, then once I know I'm in the shot I want I'll scroll frame-by-frame.