>It’s gentle process. The arms are very delicate. You have to make sure that you are fully erect. Let the spider approach you. Don’t approach it or it will lash out like it did in the gif. Let it find the opening. You’ll feel a slight tickling sensation but it’s important to remain still. Let the spider continue to reach in. It’s little ‘hands’ working the sides for an effective clean. The process may take several minutes. 40-50 minutes max. It is difficult to remain erect for that long so some gentle massaging is essential to maintain. Great care is required here as the spider will bite if it feels threatened. Let the spider gently withdraw. You are now clean and ready for the day.

https://np.reddit.com/r/WTF/comments/4h6bo4/what_long_arms_you_have/d2nsy6q