YOU SAID:
cheese on toast is a spiffing thing!
INTO JAPANESE
トーストのチーズはスパイピングです!
BACK INTO ENGLISH
Cheese on toast is spiping!
INTO JAPANESE
トーストのチーズがスパイピングしています!
BACK INTO ENGLISH
Cheese on toast is spiping!
You've done this before, haven't you.