When I do "adult" material - or borderline stuff - and there are children in the audience - I just issue a disclaimer - because if their kids understand the material - it certainly isn't *MY* fault. And if they don't understand it - what's the problem?

On the other hand - the kids I know who have grown up around the performance of "bawdy" materials seem to have a much better understanding of WHEN such material is socialy acceptable and when it is not - compared to their peers. Not to mention the fact they are much more inventive when they *DO* use such language.