Sally Field, Jimmy Kimmel, Julia Roberts Sally Field, Jimmy Kimmel, Julia Roberts

A word of advice: Don't ever get involved in a war of words with Sally Field — especially if you're Julia Roberts.

Field dominated her Steel Magnolias co-star Roberts in a "Curse-Off" on Jimmy Kimmel Live Monday, adding "-licker" and "-sucker" to four-letter words left and right like a master chef slicing and dicing proper English.

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A much more prudish (and frequently stumped) Roberts could only ponder, "Why am I in a curse-off with the Flying Nun? How does this happen?"

Check out their contest below and see other clips from the episode here. (Fingers crossed the uncensored version surfaces at some point!)