After a few days, the Lord called to Adam and said, It is time for you and Eve to begin the process of populating the Earth so I want you to kiss her.
Adam answered, Yes Lord, but what is a kiss? So the Lord gave a brief description to Adam, who took Eve by the hand and took her to a nearby bush.

A few minutes later, Adam emerged and said, Thank you Lord, that was enjoyable.

And the Lord replied, Yes Adam, I thought you might enjoy that and now Id like you to caress Eve.

And Adam said, What is a caress? So the Lord again gave Adam a brief description, and Adam went behind the bush with Eve.

Quite a few minutes later, Adam returned, smiling, and said, Lord, that was even better than the kiss.

And the Lord said, Youve done well, Adam. And now I want you to make love to Eve.

And Adam asked, What is make love, Lord? So the Lord again gave Adam directions, and Adam went again to Eve behind the bush, but this time he reappeared in two seconds.

And Adam said, Lord, what is a headache?