Kalki Koechlin, who plays Saif Ali Khan's girlfriend in Happy Ending but later breaks off with him, has a funny tale to narrate. She recalls how when shooting the scene in which she takes off her engagement ring to return it to Khan, the ring got stuck on her finger and refused to come off! "Seeing me struggling to take the ring off, the director Raj Nidimoru and Krishna DK came up with a bright idea. They decided to include that in the script because it added more humour to it. So the frame where you see me grappling with the ring is for real," chuckled the actress.