Who is younger: Patty or Selma?

Patty and Selma are twin sisters in the show 'The Simpsons', and typically the term 'younger' is relative since the age difference is minimal.

The characters Patty and Selma Bouvier are twin sisters from the animated television show The Simpsons. Since they are twins, one would not be significantly younger or older than the other in most cases.

However, to determine which character is technically younger, one would need to refer to a specific episode or the show's canon for a mention of their birth order. Typically, in the case of twins, 'younger' or 'older' is determined by who was born first and who followed.

Without specific reference to the chronology of their birth from the show, one cannot definitively answer who is younger between Patty and Selma. Should there be a particular episode or official source that mentions who was born first, that would settle the matter, but commonly in twin relationships, the age difference is mere minutes and largely irrelevant in the grand context of their lives and relationships.