Is it normal cracking joints turns me on?

Here is some advice: never work in an old folks home. Ever.

It's normal for me at least. I love when my girlfriend does it and she knows it lol. When I first met her I didnt know she could do it. But the one morning we were laying down naked and she sat up and folded her knuckles into her chest and cracked then all at once. Then she cracked all of smaller knuckles at once and it was super loud, then she stretched and cracked a few more. I got super turned on. She usually cracks her knuckkes by foldinf them into her chest or pushing them into the other hand all at once and she cracks the tips of her knuckles by pushing them against things like, the wall, the table, counter, car ( if her hand is out the window), the steering wheel, the bed, she cracks them on me. Also herself, she'll push them against her head, on her face, her belly, her boobs, her legs, her feet if she sitting criss crossed. Whem we have sex sometimes she'll sit on me and while she's riding me she's crack her knuckles. I love it haha

Do you like taking it up the ass?