YOU SAID:

I just ate a frozen sandwich and peed it out

INTO JAPANESE

冷凍サンドイッチを食べておしっこを漏らした

BACK INTO ENGLISH

I peed myself after eating a frozen sandwich

INTO JAPANESE

冷凍サンドイッチを食べた後、おしっこを漏らしてしまいました

BACK INTO ENGLISH

I peed myself after eating a frozen sandwich