yvonne,
u are saying that the nurse said the word "injection" to Sam, or to Bel? If say to Sam, Sam can understand?
Actually last sat when i brought both EV and EJ for jabs, the night before going, I told EJ that he is going for injection tomorrow. He didn't know what is injection. Then I told him, it will be a little bit of pain. Then he said "don't want".. but I am thinking to myself, maybe I try and prepare him by telling him, it might be good. But anyway, I quickly tell him, just a bit of pain, then after that, i will give him chocolates to eat. Hahaha.. don't think my method is good la.. and i also dunno if I should have told him before hand about the injection or not.
As for EV, I didn't tell her anything, cos she won't know what it means leh.