用玻璃吸管提取精子。一种不同的尿道探测方式。

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Instead of the usual sounding rods, this time the mistress uses a drinking straw made of glass to stretch the urethra. The difference to the normal rods comes into play especially during orgasm, because the sperm can flow out unhindered and it does not come to a backwater or a blockage. In addition, the transparent glass allows an unobstructed view into the spread urethra, which the mistress finds very horny.