Hi, I’ve found the thread that I think @Green_Eyed_Girl was thinking of, it’s here. It’s about bum hair removal for women but obviously men have bum hair too!! There’s lots of talk about waxing but someone suggests an eyebrow trimmer or nose hair trimmer which seems a sensible and safe option.
Don’t feel embarrassed about your hair though, I’m sure your wife isn’t expecting you to remove it all for her before play time. By all means get rid of it if it makes you more comfortable and confident but don’t feel like there’s anything wrong with keeping it either!