When having anal sex typically from the doggy style position, once a penis is removed the 'catcher' undergoes a potentially involuntary (but sometimes not) rectal contraction and a gaseous release occurs of the flatulent hitting directly into the nostrils of the 'pitcher'.

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A sexual act in which a frozen turd of substantial length and girth is inserted into the partners anus freezing their anal cavity. The Turd is removed and and anal sex commences providing a cold, almost icy canal and the sensation much like fucking a chimney that could be found in the Himalayas.