Arse, with a long, rolled 'ar' is the usage for anus in Australia. An ass is a kind of donkey!
*****
Ani took Judy to the bathroom where she adjusted the gas flame to give a warm heat to the crude shower head.
"Now pet, give yourself a good allover and soap up your pretty little box with this." Ani handed her a shampoo bottle. "then come out to the kitchen. Be a dear."
"Mrs Berzins, there is no towel!" came a timid voice from the bathroom.
"I have it here, Pet. You come on out, sweetie, I'm ready." Anita had busied herself, she had placed several thicknesses of towel on the kitchen table; two barstools stood a little way off. Josep's shaving mug and brush, and cut throat razor were to hand, along with a selection of combs and hair scissors. "Hop up on the table so I can see your Jew Bush. Don't be shy." This was not meant as a derogatory remark for she did not know Judy's origins. Her father had settled in this country as a child and had fought in the Middle East as part of the Second AIF (Australian Imperial Forces). He had converted to Catholicism, but sent his daughter to the exclusive Methodist Ladies College in Adelaide.
Judy was a little hesitant but Ani helped her up, positioning her own naked body between the girl's spread legs and settled Judy's ankles on the stools.
"Now, love, I'm going to be frank with you. All that hair is not very attractive, especially around your arse because shit sticks to it. I'm sure you have seen the tan tracks on your panties?" Judy blushed in embarrassment. "I'm going to fix that." Ani said definitively.