foxing

(verb) deceive somebody. Synonyms: flim-flam, play a joke on, play tricks, trick, fob, fox, pull a fast one on, play a trick on. Example: "We tricked the teacher into thinking that class would be cancelled next week."

(verb) be confusing or perplexing to; cause to be unable to think clearly. Synonyms: confuse, throw, fox, befuddle, fuddle, bedevil, confound, discombobulate. Examples: "These questions confuse even the experts." "This question completely threw me." "This question befuddled even the teacher."

(verb) become discolored with, or as if with, mildew spots. Synonyms: fox.