my ds is driving me dotty! I think its just an experimental thing but every meal time he's blowing raspberrys and spraying me and everything else with food! He finds it funny. He understands 'no' but does it more when i tell him so, if i tell him in a stearner way he screams miserably and we had one awful spluttery coughing fit where he got so outraged. I've also tried paying no attention to his behaviour but it has no effect! what can i do? is there anything?!