The line comes from My Little Pony: Friendship Is Magic, the animated series that launched in 2010 and built a huge online fandom. Trixie Lulamoon is a traveling unicorn magician known for bragging about her powers on stage, so fans clipped her spellcasting announcement as a standalone reaction. It spread through fan edits, remixes and soundboards alongside other short cartoon quotes, and stayed popular because the phrase works even without context. Creators still use it whenever a character confidently announces magic, tricks or an overconfident plan.