While having sex with a woman doggy-style, you, as quickly as possible, pull out of her vagina and insert your penis into her asshole. At the same time, you reach forward and cover and uncover her mouth with your hand. The desired effect is that when she yelps out of suprise and pain at your cock in her asshole, the covering and uncovering of her mouth will create a sound not unlike an Indian's War cry.

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