"50 Cowboys. On horseback. Carrying riffles"
"Goodie"
"50 Cowboys. On horseback. Carrying bow and arrows"
"Double goodie"
He continued "100 Cowboys. On foot. Carrying pistols"
"How on earth can you tell all that just by putting your ear to the ground?"
He looked up slowly and said
"What are you on about? I can see under the fence!!"