Question: what is the saddest simpsons episode?
Answer: Bart the mother (Ep 3, S10) ... 
One Fish, Two Fish, Blow Fish, Blue Fish (Ep 2, S11) ... 
Bart gets a deuce (Ep 1, S2) ... 
Barthood (Ep 9, S27) ... 
The Squirt and the Whale (Season 21, ep 19) ... 
Round Springfield (Season 6, ep 22) ... 
Mother Simpson (Season 7, ep 8) ... 
Four Regrettings and A Funeral (Season 25, ep 3)