Unikitty is the pink unicorn-cat princess introduced in The Lego Movie in 2014 and later given her own Cartoon Network series, Unikitty!, which ran from 2017 to 2020 with Tara Strong voicing the character. Lines like this one circulate as short reaction clips because the show's whole comedy is built on her forced optimism cracking. On soundboards and in edits the ah, forget it moment is used as a family-friendly way to signal giving up, which keeps it popular for gaming fails, vlogs and meme compilations.