I think my daughter was about 4 and I had took her shopping with my Mum. We got into the lift and on the first floor somebody else got in so my Mum moved to the back of the lift with my daughter and the doors closed to move onto the next floor. As usual in a lift nobody speaks or looks at one another but this perfect little voice came out loud and clear from the back of the lift 'Pardon me' I burst out laughing and got off at the next level nowt to do with me