Aishwarya had to give Hrithik a languorous foot massage while he had to gradually let out sounds of immense pleasure and ecstasy. At some point during the slow-and-steady sequence, Aishwarya to had to let out sounds of pleasure herself.
And if you think there was any awkwardness between Mrs. Bachchan and Mr. Roshan in performing this erotic sequence, then think again. The two co-stars whooped with laughter all through the rehearsals and even during the final take. Since Hrithik's character cannot feel a thing below the neck, the whole exercise shows the two characters pretending to be in the throes of ecstasy.
Laughs Sanjay Leela Bhansali, "How can my hero, who feels everything from neck up and absolutely nothing from neck down make love with his nurse? He can only pretend. Hrithik has no love scene with Aishwarya. The so-called love-making sequence is actually savagely funny take on a very poignant predicament of a man who cannot feel the things that normal people do.
“Although his limbs are senseless, his nurse gives him a foot massage to keep the blood circulations going. And that's when the whole mock-ecstasy scene happens. I must say Aishwarya and Hrithik gave a whole new definition to 'faking it' in this sequence. Bahut masti wali scene hai. But the underlying tragedy of a man, who will never actually experience what he's pretending to, has also been brought out."
It isn't every day that a co-star gets a foot massage from the super-diva Aishwarya. Apparently, Hrithik was in full prankish mode for the sequence, probably to make sure there was no awkwardness with his co-star when they performed the oddball sequence.
Sanjay can't get over how diligently Hrithik worked over his paraplegic's body language in Guzaarish. "Hrithik actually allowed his body to go completely numb below his neck. His performance is comparable with Daniel Day-Lewis' part as a paraplegic in My Two Left Feet...No, in fact, better. His character can't make love. But he make us feel his longing for physical passion."