Derpy Hooves began as a background pegasus in My Little Pony: Friendship is Magic, which premiered in 2010, and her crossed eyes helped fans turn her into a breakout favorite. Fandom cast her as a clumsy but kind mail pony, a role later embraced by the show, so lines about delivering letters became closely tied to her character. Short clips of her voice circulate among pony fans and meme editors who use the delivery joke for messages, reveals and wholesome reaction posts online.