The line comes from Futurama, in the season four episode The Farnsworth Parabox, where Bender encounters an alternate universe version of himself and leans into his own vanity. In that universe, Bender is made of gold rather than steel, which makes the boast both literal and hilariously self-obsessed. Fans clipped the exchange because it distils Bender's personality into a few seconds, and it has since circulated as a reaction sound for confident comebacks and ironic flexing in edits, streams and short videos.