1 general:: Phrase(s): don’t know whether to eat it or rub it on Rur. do not know what to do with something. (Used to describe a kind of food one does not recognize or that looks unusual.) (Also with doesn’t. Don’t used with all persons is folksy.) • That sure was a fancy dessert Mary served. I didn’t know whether to eat it or rub it on. • What kind of sauce is this? I don’t know whether to eat it or rub it on!
McGrawhill's American Idioms And Phrasal Verbs