POSER

Sticky problem

• Cheese sayer

• A model at work

• Baffler

• Baffling problem

• Baffling puzzle

• Baffling question

• Brainteaser

• Confusing query

• Confusing question

• Conundrum

• Cover girl, for one

• Difficult problem

• Difficult puzzle

• Enigma

• Group of insecure sophomores raised a tough question (5)

• Hard problem

• Hard puzzle

• Hard question

• Head-scratcher

• Head-scratching question

• Insincere sort

• It makes you think

• Mannequin

• Model

• Model at work

• Model doing a photo shoot, for example

• Model or pretender

• Model or puzzle

• Model, at times

• Model, often

• Model's problem (5)

• Not the real McCoy

• Nut to crack

• One in a pic

• One pretending to like trendy music, say

• Perplexing problem

• Phony

• Portrait sitter

• Pretender

• Pretentious fraud

• Pretentious type

• Puzzle

• Puzzle or fashion model

• Puzzling problem

• Puzzling question

• Rebus for one

• Riddle

• Sixty-four dollar question

• Stumper

• Tough crossword clue

• Tough nut

• Tough nut to crack

• Tough one

• Tough probleir

• Tough puzzle

• Tough question

• Tough riddle

• Toughie

• Tricky puzzle

• Wannabe

• Working model

• A person who habitually pretends to be something he is not

• A particularly difficult or baffling question or problem