This conversation is like:
A: I don’t know why Democrats are so sensitive. Look at us tough Republicans! Why, one of our presidents, Lincoln, got shot in the head and you don’t hear us complaining about it. No Democrat president was ever shot in the head and they won’t stop complaining.
B: What about Kennedy? He was a Democrat who got shot in the head.
A: How DARE you say I support the assassination of Kennedy! Show me ONE time I ever did that! One time! You can’t!
B: I didn’t say you supported the assassination of Kennedy, but he WAS a Democrat and he DID get shot in the head, so when you said, quote, “No Democrat president was ever shot in the head”, that was a lie, or maybe you just misspoke.
A: I never called for the assassination of Kennedy, and look at these ten examples of bad stuff Democrats have done!
B: Fine, but the specific phrase “No Democrat president was ever shot in the head” is still wrong. Did you have some particular definition of “shot” or “head” in mind so that Lincoln counts but Kennedy doesn’t?
A: Don’t play semantics with me. Here is some more bad stuff Democrats have done. Can you find examples of Republicans doing exactly those things? NO, I thought not!
B: Still, though, “No Democrat president was ever shot in the head” is pretty damn incorrect. Here’s a point-by-point description of the events of November 22, 1963 in which a President who was a member of the Democratic Party was shot in the head.
A: TLDR, boil it down.
B: Okay, you’re a liar.