Boy: Check it out-- I got a GPS receiver for Christmas!  What should we do with it?
Girl: Let's take our latitude & longitdue, put our birthdays after the decimal points, then go to that spot and make out.
[[Boy is in love]]
Narrator: Merry Christmas from XKCD
[[car driving off in to the distance]]
{{Alt Text: If it's over water, and you can't get a boat or revise the rules to preserve the makeout, there is no helping you.}}