The line comes from Grand Theft Auto V, released in 2013, where Michael De Santa is one of three playable protagonists, voiced by Ned Luke. Michael is a retired bank robber whose dialogue often mixes polite phrasing with open contempt, and how magnanimous became one of his most clipped expressions of sarcasm. As GTA clips spread on video platforms and soundboards, fans isolated short Michael lines for reactions, and this phrase survived because it works without context. It is still used today to answer boastful, stingy or self congratulating behaviour.