The point at which a girl that used to be hot, is no longer hot. This is typically due to advancing age.
Heather Locklear has finally hit the wall. She must be over 40 now.
by Jack Goff May 30, 2006
when you reach a point of total exhaustion or fatigue.
I hit the wall around 3 yesterday. I had a couple of hours left to work but I just wanted to go home and crash.
by hipster August 07, 2010
To 'hit the wall' is to suddenly reach a mental block. It could be as simple as running out of ideas or as complex as not knowing what to do in life. Hitting the wall usually happens suddenly and the effects can last for long periods of time.
While writing my newest novel I suddenly hit the wall and had no idea what to write anymore.
by MentalDictionary March 29, 2015
The point you get to when you can't drink any more booze or smoke any more dope and just need to pass out.
Man I got so mashed last night that I hit the wall at about 3am!
by Nitram May 26, 2004