Never trust a bear in a bathroom. A new trailer for family comedy "Paddington" shows the bear having no clue about what toothbrush, mouthwash, and shower are. He accidentally floods and destroys the bathroom as he experiments with the toothbrushes and dunks his head in a toilet, AceShowbiz said.

Coming from David Heyman, the producer of "Harry Potter" film series, the hilarious movie follows the adventures and mishaps of a talking bear from "Darkest Peru" who gets adopted by a London family when they find him lost at Paddington Station. Colin Firth provides voice to the titular bear.

Directed by Paul King, it opens on Christmas Day, December 25 in North America. Nicole Kidman, Hugh Bonneville, Sally Hawkins, Julie Walters, Jim Broadbent, and Peter Capaldi are among the cast ensemble.