What’s your favourite classic Simpsons episode?

Hi as the Simpsons characters was so popular let’s move on to classic Simpsons episodes what’s your favourite episode and why? 
mine is not sure what it’s called but Homer gains a lot of weight to stop working due to disability. Love these to quotes I wash my self with a rag on a stick and I think it’s ironic that a slimmer man would have fallen to his death and Bart says and I think it’s ironic that dads a.. has prevent the realise of toxic gas.