New Delhi: For a scene in her forthcoming marathon-based film 42 kms, Mandira Bedi had to slap co-star Gautam Kapur and the actor says it was a "slap to remember".

"I did expect a slap but not with that intensity... it was definitely a slap to remember," said Gautam.

Gautam and Mandira play a married couple in the film and the scene takes place when Mandira finds out her husband had been cheating on her.