2012-02-13 ■ https://www.google.co.jp/search?q=ass+pyramid&hl=en&safe=off&client=firefox-a&rls=org.mozilla:en-US:official&biw=1362&bih=707&tbs=simg:CAQSVRpTCxCo1NgEGgIIAgwLELCMpwgaLAoqCAESBNsE3AQaIPSaeocKpINnp0gn-1N4p2VllljJW8DaebwuaJt1p3X3DAsQjq7-CBoKCggIARIEea0kxgw&tbm=isch&source=lnt&sa=X&ei=kP84T5uACMzomAWk5vyaAg&ved=0CAwQpwUoAQ#q=ass+pyramid&hl=en&safe=off&client=firefox-a&sa=X&rls=org.mozilla:en-US:official&tbs=simg:CAQSVRpTCxCo1NgEGgIIAgwLELCMpwgaLAoqCAESBNsE3AQaIPSaeocKpINnp0gn-1N4p2VllljJW8DaebwuaJt1p3X3DAsQjq7-CBoKCggIARIEea0kxgw&tbm=isch&bav=on.2,or.r_gc.r_pw.,cf.osb&fp=1&biw=1784&bih=1235