Is it normal to get turned on when you have/get a lot of money?

In months where I work *a lot* of overtime and get a big paycheck, I kind of get turned on. It's not like I get full blown horny, but I do kinda get a slight boner. I have no idea why and I've been wondering if I'm weird for getting a boner when I have a lot of money or if it's normal? You guys tell me. Cheers!