Photo courtesy Simpsons Wiki
The Simpsons: Season 4, episode 8
Videoclip available here;
Link to episode description here
There is a brief clip in this episode where Homer attempts to explain the nature of women to Bart, who has developed a crush on a new next-door neighbor. Homer uses some wild similes by comparing women first to a refrigerator and then to a beer. It leads nicely into a discussion of metaphor and simile as language tropes.
Note: This scene contains some vague sexual references if you use the DVD, Homer is drunk at the end of the scene but that can be edited out.