YOU SAID:

i accidentally spilled pants on my pants and now I'm dying oh god please help

INTO JAPANESE

誤ってズボンにズボンをこぼしてしまった

BACK INTO ENGLISH

I accidentally spilled my pants on my pants

INTO JAPANESE

誤ってズボンをズボンにこぼした

BACK INTO ENGLISH

I accidentally spilled my pants on my pants