YOU SAID:
I'm about to pump the custard!
INTO JAPANESE
私はカスタードをポンプにして!
BACK INTO ENGLISH
I have to pump the custard!
INTO JAPANESE
私はカスタードをポンプする必要がある!
BACK INTO ENGLISH
You need to pump my custard!
INTO JAPANESE
私のカスタードをポンプする必要があります!
BACK INTO ENGLISH
You need to pump up my custard!
INTO JAPANESE
私のカスタードをポンプする必要があります!
BACK INTO ENGLISH
You need to pump up my custard!
That didn't even make that much sense in English.