I got interested in prostate massage recently because I saw a video of a guy doing it, he put the vibrator in his butt and without even touching his cock it got hard and started convulsing and then he blew one of the biggest loads I've ever seen. I bought the one I linked below off of Ali Express. No huge explosive loads like the guy in the video yet but it's still fun and feels great and definitely speeds up getting off.
https://m.aliexpress.com/item/328911551 ... 8673306091