hit the wall

hit the wall (third-person singular simple present hits the wall, present participle hitting the wall, simple past and past participle hit the wall)

1. (informal) To experience sudden fatigue as a result of glycogen depletion, e.g. when cycling.

   Synonym: bonk

2. (informal, seduction community) Of a woman: to lose her physical attractiveness through growing older.
   • 2014, Lisa Scottoline, Francesca Serritella, Have a Nice Guilt Trip, page 50:

     Don't tell Heather Locklear. She won't be able to hear you anyway, as she is over forty and will have to turn up her hearing aid. By the way, please note that, according to urbandictionary.com, men don't hit the wall.

   • N. L. Shraman, How to Seduce a Girl? The Science of Seduction

     Ninety percent of girls hit 24, they hit the wall; 25 they hit the wall because they don't care take care^[sic] of themselves. They don't know any better because they hit their peak so young.

• hit a wall