Name for a March-May Blizzard, one day it's nice, sunny and 70 degrees, the next day it's a white-out. The weather bitch slaps your brain, and makes it difficult to concentrate, among other things in Colorado that are already distracting you, for example, legalized Marijuana.
Man, I was going to go for a killer climb, hike and bike today, but we've experienced a Colorado Bitchslap, so I'm going to do nothing, except watch my car experience a Colorado Carwash.
The literal and/or metaphoric slapping or whacking someone in order to knock some sense into them.
Someone bitchslap the TV producer that keeps putting Vince Guaraldi's "Cast Your Fate to the Wind" on as background music for the weather reports on Hurricane Frances in Florida!