Abhishek Bachchan and Vidya Balan shown the door out

The two actors along with the whole crew of the movie were asked to leave the Cambridge University grounds as the lead actors were standing on the lawn grass.

Abhishek Bachchan and Vidya Balan who were shooting for R Balki's 'Pa' were in for a bad-mannered shock during their final shoot sequence in London at 'Cambridge University.'

The two actors along with the entire crew of the movie were asked to leave the Cambridge University grounds as the lead actors were standing on the lawn grass.

The University follow strict laws, and no one with the exemption of the scholar are allowed to set foot on the grass in the small gardens of the campus.

The happening took place on June 20 at 6:30 in the morning. The team had set up their cameras in the early hours of morning as they supposed that they could complete their shot without trouble but were shown the door out just before Balki could utter out 'Action.'

The sequence was later captured in a different college far away from the Cambridge University.

Also, to avoid any further hassle Balki decided to take on a non-grassy area.

Pa, slated for year-end release will witness Abhishek Bachchan portrays the role of Amitabh Bachchan's father. Big B will be playing the role of a man suffering from progeria, because of which he ages faster than the others.