If Ajay Devgn entertains fans with his action and comedy sequences, he also indulges in amusing antics to make his two-year-old son Yug smile. Interestingly, a chest-pumping dance step that he did to make the toddler laugh has been incorporated in his forthcoming film "Son Of Sardaar" (SOS).

One day when Yug visited Ajay on the sets of SOS, he did the same step for him. The filmmakers noticed it and instantly decided to incorporate it in the movie, said a source close to the team.

SOS, also starring Sonakshi Sinha and Sanjay Dutt, is set for release Nov 13.

It is co-presented by Viacom18 Motion Pictures and Eros International, and co-produced by Ajay Devgn Ffilms and YRV Infra & Media (P) Ltd Production.