"Experience! He gets scared of a spider," said Deepika.
"If you are in a room and if there is a spider or a cockroach, rest assured, everyone else will be running behind it to shoo it away and Ranbir will be hiding under the bed," the 27-year-old told reporters at the launch of Jabong Yeh Jawaani Hai Deewani collection here on Wednesday.
After the 2009 release Bachna Ae Haseeno, Ayan Mukerji directed "Yeh Jawaani Hai Deewani", releasing May 31, is their second film together and the first after their patch-up.