two of my freinds just came to my door telling me not asking that im dressing up as a hooker for Хэллоуин help.....

well first thing don't tell them it's childish или u don't wanna look like a slut because that will definetely hurt there feeling's trick или treating is for all ages so go for it but maybe say Ты already dressed up as a hooker или heard that some other girls were dressing up as them ask to be somebody else или just fake being ill at ther last минута that's just my opinion

It's not childish to dress up for Хэллоуин as long as it's slutty... Ты should go as a hooker and be one for one day.

Well, dressing up as a hooker isn't exactly what Ты call childish, no?
Unless that's what children are doing these days....

Just tell them no. That Ты don't want to dress up, and even if Ты did, Ты wouldn't want to be a hooker. Ты decide on what Ты do или do not want to wear for Halloween.