YOU SAID:

I am currently unable to contain my genatalia in my pantaloons

INTO JAPANESE

私は現在、性器をパンタロンに収めることができません

BACK INTO ENGLISH

I can't fit my genitals into pantaloons right now

INTO JAPANESE

今は性器をパンタロンに合わせることができません

BACK INTO ENGLISH

Now I can't fit my genitals into pantaloons

INTO JAPANESE

今、性器をパンタロンに合わせることができません

BACK INTO ENGLISH

Now I can't fit my genitals into pantaloons