One day God and Adam were walking in the garden. God told Adam it was time to populate the earth.
He told Adam, "Adam, you can start by kissing Eve." Adam replied "God, what is a kiss?"
God told Adam and Adam went and took Eve behind the bush and kissed her. A little while later, Adam came back out with a big smile and said "Wow Lord! That was great!! What next?"
God said, "Adam, I now want you to caress Eve." Adam says, "Lord what is a caress?" God explained it to Adam and he again took her behind the bush.
A little while later, he came out and said "Lord that was even better than a kiss! What next." God said, "Here is what gets the deed done. I now want you to take Eve and make love to her."
Adam said "Lord, what is to make love?" God explained and Adam took Eve behind the bush and a few seconds later came out and said "Lord, what is a headache?"