def wee(waa, woo=False, wii=True):
    print "OK", waa, woo, wii

wee("stuff")
wee("stuff", "dog")
wee("stuff", "dog", "cat")
wee("stuff", wii="lamma")
wee(wii="lamma", waa="pocky")
wee(wii="lamma", waa="pocky", woo="blorp")
