David Schwimmer brought his own corny dad ... makes his teenage kids on the show -- Devin (Sam McCarthy) and Cece (Jayden Bartels) -- wince the hardest is, "What plant should you watch out for?

The lovely Jayden Bartels stops by the Young Hollywood ... She also talks about working with David Schwimmer on the series based on the popular R.L. Stine books, plus she shows off some dance ...

Just say that you stand with your Jewish friends, colleagues, and neighbours against hatred," Schwimmer said. David Schwimmer presents the inaugural "Heroes Against Hate" recognition to 30 ...