How to deal with swearing (4 yr old)

[TitsalinaBumSquash]

My 4 year old DS has picked up 'Idiot Fuck' from god knows where certainly not at home. Apart from going into the nursery to ask a few questions, what would you do to combat it?

I have tried ignoring, telling calmly why we don't say those words and I have even tried loosing my temper. Nothing works.

I am mortified after going to pick DS1 up from school, DS2 decided to have a tantrum and scream 'Idiot Fuck' very clearly at the top of his voice at the school gate.

The only thing he cares about is his Nintendo DS (infact it is somewhat of an obsession) I have told him he will not be playing it for the rest of the week which led to mare swearing.

Any ideas?

Oh dear!
Sorry, but this has had me laughing out loud!
Not helpful I know!

I think i'd try the 'it upset's me' card next. Try and seem really upset about it - it might work?

Good Luck.