I personally dont plan when I am going to smoke, so whether I have eaten or not doesnt seem to affect my high in any way.

Eating after I smoke is pretty much orgasmic. Especially if its chocolate. But, again, doesnt seem to affect my high.

My boyfriend smokes cigs and he says that after we smoke a bowl the cigs help the high. I dont smoke cigs myself, so I wouldnt be able to give an opinion on that subject.