YOU SAID:

i didn't urderstand this

INTO JAPANESE

私はこれを我慢しなかった

BACK INTO ENGLISH

I did not stand this

INTO JAPANESE

私はこれに耐えませんでした

BACK INTO ENGLISH

I could not stand this

INTO JAPANESE

我慢できなかった

BACK INTO ENGLISH

I couldn't hold it in and I peed.

INTO JAPANESE

我慢できなかった

BACK INTO ENGLISH

I couldn't hold it in and I peed.