A mistake or fail.

(idiomatic) Out of touch with the modern world. / (idiomatic) Politically incorrect. / Used other than figuratively or idiomatically: see stuck, Stone Age.

Alternative form of ask a silly question, get a silly answer

plural of stupidity tax

(slang, humorous) Synonym of dumb tax (“a national lottery”)

(US, education) In a college or university: a student who enrolls immediately after graduating high school, does not work during their enrollment, and is not financially independent.

(US, education) In a college or university: a student who does not enroll immediately after graduating high school, works full-time or part-time during their enrollment, or is financially independent.

Alternative form of nontraditional student

A stud (jewel) stuck into the nose.

A person who has not yet earned a driving license, and until then is allowed to drive only a marked car with a licensed driving instructor in the passenger seat.