Why does your girlfriend want you to shave your balls?

Because it gross!

She wants to suck on em and put em in her mouth without hair......... Ew you should do it.

She obviously wants to suck on them or play with them. Shave you balls dudes, it makes them very sensitive. I am 33 and I have been shaving mine 2X a week since I was 14. I like my big balls "smooth as a baby's butt" and my girlfriend loves them that way.