Season 9 Episode 10 I think, it’s the one where Homer becomes a bodyguard. This scene is after the rats milking one

Oldboy (Korean: 올드보이; RR: Oldeuboi; MR: Oldŭboi) is a 2003 South Korean neo-noir action thriller film directed and co-written by Park Chan-wook. A loose adaptation of the Japanese manga of the same name, the film follows the story of Oh Dae-su (Choi Min-sik), who is imprisoned in a cell which resembles a hotel room for 15 years without knowing the identity of his captor nor his captor’s motives. When he is finally released, Dae-su finds himself still trapped in a web of conspiracy and violence. (Taken from Wikipedia)