What are some of the stranger effects of top surgery?

Okay, so I don't know if I should mark this as NSFW. But after top surgery (double incision, FNG) I've noticed that when I wipe my ass (specifically when the TP touches my butthole) on the toilet, the nerve endings in my nipples wake up. To be clear, when I wipe my ass, I feel sensations in my nipples. I am 5.5 weeks post-op and it's only gotten more sensation-y that my nipples are now healed. This did not happen to me pre-top surgery.

This got me thinking, what are other weird things that can happen to your body post-top surgery? I'm sure other people have strange, unexplainable occurrences.