Or do you shape them post-crimp, as it were?
(, Thu 16 Feb 2012, 10:45, archived)
Most people don't have much control sphincterally aside from opening and closing it. I've developed mine to do complex movements. It's basically the anus equivalent to our evolution of 'the precision grip.'
(, Thu 16 Feb 2012, 10:48, archived)
In the mean time, look at this tiny bastard
www.bbc.co.uk/nature/17028940
(, Thu 16 Feb 2012, 10:51, archived)