I got this joke via Jim Thompson's Great American West Network....A great joke...from Elizabeth McKibben from AZ...
Thanks Beth....

Ole vas walking home late at night...through the park...and he see's a woman in the shadows....

"Twenty dollars" she whispers...

Ole had never been with a hooker before...but, figures, vat de heck..only 20 bucks....

So, they hide in the bushes....and start to really go "at it"...when all of a sudden a light flashes on them.... It's a police officer...

"What's going on here?" asks the officer.

"I'm yust making luv to my vife" Ole answers indignantly.

"Oh I'm sorry"...says the cop..."I didn't know."

"Vell " sez Ole "I didn't neder...'til you shine dat light on her"