There is a great controversy over the name of Celestia and Luna's race. Winged unicorns aren't among established mythological creatures and there is no fixed name, but, obviously, we need to call them somehow. Below are several possibilities for people not satisfied with plain, descriptive "winged unicorn".
Excuse me for overusing "some people do X", but considering the nature of this work ("heard on the Web"), it may be very hard to pin-point sources.
It may be a little counter-intuitive, but the creators of Friendship is Magic went in this direction. After all, Luna is "the younger unicorn [who] refused to lower the moon to make way for the dawn." Similar decision was made by Madeleine L'Engle in A Swiftly Tilting Planet (1978).
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Below are listed appearances of words like "someone", "somebody", etc. instead of "somepony". Some episodes might not have been included.
Fluttershy: Oh my. Um... Stop, please, everyone.
Pinkie Pie: And if you're new, then you haven't met anyone yet and if you haven't met anyone yet, you must not have any friends.
Pinkie Pie: I'll just throw a great, big, ginormous, super duper, spectacular welcome party and invite everyone in Ponyville!
Rainbow Dash: Everyone will be watching the sky. Their eyes riveted on the Wonderbolts.
Rarity: I would stroll through the Gala and everyone would wonder: "Who is that mysterious mare?"
Fluttershy: if you haven't given it to someone else
Rainbow Dash: I couldn't risk a goody four-shoes like you giving that ticket away to just …
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