let me (m40) play with her anus. Nothing crazy just an erotic massage that turned into an anal massage and light licking and fingering. She's never let me do that before. After the appropriate warming up I asked her if I could slip a gloved finger in. She agreed. No objections. Body language and verbal ques checked out. After a few minutes I asked if she wanted doggy and I wanted to try putting a finger in butt while we did it. She's never came from penetration before. Not only that but after 10 minutes of butt play she was soaked. That type would have only happened after 30 to 40 minutes of serious foreplay. Anyway. I get her into position and start fucking. As soon as I slip my finger in her butt she came. I was impressed she normally doesn't climax that fast. I asked her if she really enjoyed herself and liked having her butt played with. She said it was meh. I asked if she knew how wet she got , she replied "it's a defense mechanism " I'm not a biology expert by any means. I was perplexed. How does playing with your butt make react that way as defense mechanism? I asked if she felt super turned on and if that's why she came so fast. She said no she couldn't control it, it just happened.