In the one where Bart wins the elephant:
Homer (in a tarpit): "Don't worry. I'm sure I can struggle out of here! I'll just pull my legs out with my arms(arms get stuck). Now, I'll pull my arms out with my face."
When Marge's aunt dies and one of Marge's sisters decides she wants kids:
Willie, after viewing Selma's tape: "Back to the Loch with you, Nessie."
Homer, realizing that the chips he's eating were Marge's aunt's collection of potato chips that resemble celebrities: "Uh-oh" and continues to eat them.
After Lisa drinks the water and hallucinates, in the first aid office:
First aid guy: "Give her these, then these, and these" hands a bunch of pills to Selma. Selma: "Thank you, doctor" Guy: "Oh I'm not a doctor"
From the Springfield lemon tree episode:
Homer: "He didn't turn bad because of one little speech. If anything it was the time you made him wear a swimsuit instead of underwear. And let's not forget your little speech."