From “The Simpsons” Episode “Covercraft”, Season 26 Episode 8 –

See more Korean Simpsons references:
http://korea.lablob.com/2012/12/10/koreanisches-gangster-film-festival-bei-den-simpsons/

http://korea.lablob.com/2012/03/13/von-den-simpsons-kimbap-machen-lernen/

http://korea.lablob.com/2010/10/11/wustet-ihr/

http://korea.lablob.com/2011/11/14/warum-die-simpsons-gelb-sind-teil-2/