The Earth Science teacher was lecturing on map Reading.
After explaining about Latitude, Longitude, Degrees and Minutes the teacher asked,
"Suppose I asked you to meet me for lunch at 23 Degrees,
4 Minutes north Latitude and 45 Degrees,
15 Minutes East Longitude...?"
After a confused silence, a voice volunteered,
"I guess you'd be eating alone."
If you laugh a little, say "I" in the comment box.