Two neighbors had been fighting each other...

Two neighbors had been fighting each other fornigh on four decades. Bob buys a Great Dane andteaches it to use the bathroom in Bill's yard.For one whole year Bill ignores the dog. So Bob then buys a cow and teaches it to use thebathroom in Bill's yard. After about a year and ahalf of Bob's cow crapping in Bill's yard; beingignored all the while, a semi pulls up in frontof Bill's house. Bob runs over and demands to know what's in the18-wheeler. 'My new pet elephant,' Bill replies solemly.