If an auto worker sets Biden off on a foul mouth tirade, how will he handle Pres Trump or Sanders during the debates/campaign?

Have you already forgotten?  Foul mouth tirades are proof that the candidate is real, unscripted, tells the truth, etc.  At least that's the excuse you gave for all of Trump's idiotic tirades.  Don't you remember Trump's "shithole countries"?  Also see https://time.com/4978212/donald-trump-cursing-swea...

Well all know traitor trump can pout better than a two year old girl

Trump doesn't know when to shut up and let his experts do the talking regarding Corona.  He certainly doesn't know where "the line" is.

That was an act to freak out Trump when they debate.

He put a liar in his place, hopefully he does it daily

Don't you worry, he'll do fine. Unlike Trump who is already shitting bricks and spreading every lie under the sun in order to badmouth Joe.

Trump is triggered by 16-year-old girls like Greta Thunberg.