The "from Russia" thing is an old joke, and not a particularly good one. Here's another old joke that's even worse...



Twilight: "No, Pinkie, let me give you another example. Fluttershy, do you own a pair of hedge clippers?"



Fluttershy: "Yes?"



Twilight: "From that I can deduce that you own a house."



Fluttershy: "W-well, you've been to my house..."



Twilight: "And from the fact that you own a house, I deduce that you are somebody's waifu."



Fluttershy: "...!!!"



Pinkie: "Congratulations! I didn't even know that!"



Twilight: "And from the fact that you are a waifu, I can deduce that you are straight."



Pinkie: "Oh, I get it now! I'm going to go try it..."



Rainbow Dash: "Hey, Pinkie!"



Pinkie: "Hey, Dashie. Do you have a pair of hedge clippers?"



Rainbow Dash: "...this isn't going to be like the time you asked me a for a trombone, is it?"



Pinkie: "Just answer the question!"



Rainbow Dash: "No, I live in Cloudsdale, where there's not a lot of bush..."



Pinkie: "Well, you're a queer, ain't ya!"