Trollz was a mid-2000s animated series based on the Troll dolls, following a group of teenage troll friends who used BFFL, short for best friends for life, as their shared motto. Clips and ringtones from the show have circulated online among fans who grew up watching it, often shared as short nostalgic alerts rather than full songs. Its continued use comes from that recognition factor: even a few seconds instantly signals friendship, colour and early-2000s cartoon nostalgia.