Is it normal that i got turned on by finding sex toys?

well for starters since I'm 21 I obviously don't live with my parents anymore... But I do come to Visit every once in a while, since my parents are divorced I usually visit my dad and his girlfriend first, while I was there, there was nobody home cause they went out before I came. so I was gonna go biking but I forgot to bring socks for my shoes. I went in my dad and his girlfriends room, and in the very bottom cabinet of her bedside table I found at least ten sex toys, any where from vibrators to plugs or just plain rubber penis. And there were TONS of condoms. My first reaction was OMG! And then it kinda turned me on... Is that normal to be turned on by my dads girlfriends sex toys???