a hilarious joke

A driver spies a refugee eating grass along a stretch of motorway. He pulls over.
"Hey, don't eat that," he shouts, "... it's filthy- full of dog shit, grit, all sorts. If you're hungry, come home with me!"
The refugee looks up and replies "I have a wife also..."
"No problem," says the man, "bring her as well, the more the merrier!"
"I also have 8 children, 2 grandkids and severla cousins.." the refugee continues.
"Now wait just a minute" shouts the driver, readying his engine, "just how big do you think my fucking lawn is?"