Why , O Why ?

It reminded me of a joke that is why I am laughing.
A guy who lives on second floor forgot to pickup his wrist watch and roomal/hankie ( handkerchief) . When he was out the front door of the building he suddenly remembered so he saw his wife watching him leave from the window of their apartment. He told her to throw his watch and roomal one by one and he would catch them. So she throws the watch first , which he misses to catch and it breaks into hundreds of pieces. He is embarrassed and tells her " roomal nahi phainkna , main ooper aa raha hoon lay nay k lee-a"