Picard would simply defer them to the Grisellas' leader - their auntie Grizelda. After six months, she'll wake up and explain it to them. Meanwhile, he'll explain what she does with something like this: She knows her mind all right, your auntie Grizelda, She says she knows my kind, she might, maybe so Oh, yeah, she's raised you right, your auntie Grizelda, You only know the things she wants you to know Kirk would first ask the there are any female Prophets. Unless only a female Prophet appeared, in which case he'd ask if there are men (such as the case of "That Which Survives"). After asking and being thankful the Prophets don't use neither Quatloos nor Squatloos, the Prophets then ask what this "love" thing is. Kirk doesn't need Chuck Woolery to explain, so after saying it's about having greater consideration for a person other than one's self, Kirk has a psychotic breakdown because the Prophets are incorporeal and he can't touch them. As opposed to feeling relieved because incorporeal beings don't have STDs.