That depends on a couple of thing, mainly the current of electricity used.

Saliva is a fairly poor conductor of electricity, but don't try to teel that to anyone whose ever touch a 9 volt battery to their tongue.

On the other hand, vaginal fluid is quite a good conductor of electricity, being acidic as it is. Electrical current passes more easily through vaginal fluid than saliva, so the partner invovled might get a tingle from that as well.

Just for fun, try this experiment: Touch a 9 volt to your tongue, and then to your pussy and see which one tingles the most.