Actors Saif Ali Khan and Riteish Deshmukh showed their mischievous side on the sets of their upcoming film `Humshakals` by putting almost five kg butter on their co-star Ram Kapoor's face.

Recently, the team was shooting a sequence with Saif, Riteish and Ram. It required Saif and Riteish to put a little amount of butter on Ram's face.

According to a source, initially, Ram was quite hesitant thinking the amount of butter would be quite a lot but later on gave in after being assured that it would be very little, said a statement.

But Saif and Riteish had something else in mind. When the shot was on they got carried away and put a lot of butter on Ram's face, almost five kg of it.

The director Sajid Khan too did not say cut and enjoyed the impromptu act. Ram's surprised look was well captured and will be seen in the final cut too.

It will hit the screens June 20.