A Cowboy riding down the trail encounters an Indian laying on the trail 
with hard on. The Cowboy asks "what are you doing?" Indian says" Me tellum 
time." Cowboy shakes his head, rides on, encounters another exactly the 
same. Says "You telling time?" yup" "how can you tell time like that?" 
Indian says "workum like sundial, readum shadow". Cowboy, incredulous, 
rides on. Encounters Indian in trail masturbating. Cowboy says "let me 
guess, you're telling time too." Indian says " Nope. But me windum clock!"