Thanks to Fran for forwarding this joke.   If it's also on David Minkoff's site, my apologies to him, as I could not find it there ...

Two big Texans are sitting on a plane from Dallas and an old Jewish Texan is sitting between them.
 
The first Texan says, "My name is Roger.   I own 250,000 acres.   I have 1,000 head of cattle and they call my place The Jolly Roger."
 
The second Texan says, "My name is John.   I own 350,000 acres.   I have 5,000 head of cattle and they call my place Big John's."
 
They both look down at the Jewish man who says, "My name is Irving and I own only 300 acres."
 
Roger looks down at him and say, "300 Acres?   What do you raise?"

"Nothing", Irving says.
 
"Well then, what do you call it?" Asked John.

"Downtown Dallas."