Knock knock.
Who’s there?
Boo.
Boo who?
Aww don’t cry, it’s just a joke!
The article is drawing comparisons between what conservatives choose to be outraged by vs the things they actively engage in.
Her: No, silly. Protection for your penis.
My, crying: WHAT’S UP THERE??
Sort of, Dan Wilson said he had the idea while writing the song because his wife was pregnant so he slipped it in as a double entendre. It’s like 90% bar closing with a couple lines alluding to being born: “Closing time, this room won’t be open till your brothers or your sisters come”.