"Trump's campaign, recognizing that he'll lose to himself if November's election is a referendum on him, is trying to flush Joe Biden into open combat by challenging him to more debates, taunting him as 'Hidin' Biden,' and posing a 'Question of the day for Joe Biden.'
"The Trump campaign is getting very frustrated that Biden is keeping a low profile and letting Trump give himself uppercuts every day."
All the more reason for Biden to keep a low profile. "When your enemy is …"
Biden has already committed to, I believe, three debates, which are three more than advisable for any candidate with a double-digit lead. But obviously Biden can't duck the now rather standard triad of presidential debates (although as weird as Trump has made modern politics, I do wonder how obvious the "obviously" is).
The Biden campaign's press secretary answered the opposing campaign's bullying: "The Trump campaign is frustrated because every single day Joe Biden is making a case to the American people for steady, experienced, compassionate leadership that is in stark contrast to the erratic, divisive and cruel message coming from Donald Trump's White House."
If the press secretary really wanted to irritate Trump, though, he would have written about "the erratic, divisive and cruel message coming from Fat Elvis' White House" (or whatever epithet of the spokesman's choosing).
When they go low, we go can go lower. And nothing unnerves Trump — which makes him even goofier than usual — like ridicule.