groaner

noun4

1. •
   One who groans or complains.

   • I don’t need to hear from groaners like you.
2. •
   (informal) A work of extremely low quality, so bad as to inspire groaning.

   • That movie was a real groaner.
3. •
   (informal) A particularly egregious joke, especially a pun.

   • From the cleverest repartee to the worst groaner, people use and respond to puns, but sometimes find them hard to define. — 1993
4. •
   (slang) A whistling buoy.