My Girlfriend Has a Weird Fetish

My girlfriend is extremely weird. I mean, she's hot, but she's weird. We had a conversation the other day about our sexual fetishes, and I told her mine....I want to see her in a Lacoste shirt, daisy dukes and cowgirl boots. Easy, simple and NORMAL. Her sexual fetish? She wants me to dress up in a pirate costume and sit on the toilet, and pretend I'm taking a dump while saying "ahoy mateys, arghhhh". WTF? That is just weird....what the h*ll do I make of this? I mean......not sure if this is the girl I want to bring home to mom, if she has weird thoughts like this.......