Continuously contract the muscles of the anus, causing the prostate to squeeze the anal plug~
Give the glans a little stimulation~
收缩肛门的肌肉(简称提肛，使前列腺挤压肛塞，再给龟头一点刺激~
Continuously contract the muscles of the anus, causing the prostate to squeeze the anal plug~
Give the glans a little stimulation~
收缩肛门的肌肉(简称提肛，使前列腺挤压肛塞，再给龟头一点刺激~
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