Is the Pope (a) Catholic?

Is the Pope (a) Catholic?

A humorous response to a question that the speaker feels would obviously be answered in the affirmative. A: "Are you going to the party tonight?" B: "Is the Pope a Catholic? Of course I'll be there!" A: "Do you think Dave took the money?" B: "Are you kidding? Is the Pope Catholic?"
See also: pope
Farlex Dictionary of Idioms.

is the Pope a Catholic?

People say Is the Pope a Catholic? to mean that the answer to a question is obviously yes. `You know how to find it?' Leaphorn asked. `Is the Pope a Catholic?' the taxi driver said. Note: This expression is used humorously.
See also: pope
Collins COBUILD Idioms Dictionary, 3rd ed.

Is the Pope (a) Catholic?

used to indicate that something is blatantly obvious. informal
See also: pope
Farlex Partner Idioms Dictionary

is the Pope Catholic?

A positive response (yes) to what one considers a stupid question. Dating from the mid-twentieth century, this answer should be avoided in polite society.
See also: pope
The Dictionary of Clichés by Christine Ammer
See also:
  • (Don't ask me,) I just work here.
  • (Don't ask me,) I only work here.
  • occifer
  • ossifer
  • IMAO
  • I could tell you but then I’d have to kill you
  • I could tell you, but then I'd have to kill you
  • partay
  • me three
  • that's my story and I'm sticking to it