A birdie from the sets of Meri Brother Ki Dulhan informs that Imran Khan is having a lot of fun teasing his female co-star Katrina Kaif. He refers to Kat as 'Udd Dabangg' from Salman Khan's Dabangg.

He earlier also had good fun teasing Deepika Padukone on the sets of Break Ke Baad by calling one of the spotboys as 'RK' which are the initials of her ex -- Ranbir Kapoor.

Ouch, wonder what Sallu and RK have to say!