Camping trip 

A period of delusion in an otherwise sane person who comes to believe that the world will end, soon, in a particularly unlikely way. In extreme cases, the deluded person may harm themselves or others out of a desire to keep them from suffering more in the event. Overall sanity will mostly return after the date comes and goes without event, but the prognosis is not good and the person should be watched further.

"Camping" after Harold Camping, who famously and wrongly predicted the end of the world on May 21st, 2011 and again on October 21st 2011.
"Trip" as in acid trip.

Alice: "I saw Charlie on the corner holding a sign saying that the the world will end next February."
Bob: "Again? I thought he learned his lesson after his last Camping trip failed to pan out."
Alice: "Well, he says the math is REALLY correct this time..."

Camping trip by Omniwombat November 13, 2011

Camping trip to Colorado 

An abortion in Texas is referred to as a camping trip to Colorado. Since a person can be sued in Texas for helping another person get an abortion, people use this code.

“Girl, that guy who couch surfs knocked me up last month. I need to yeet a fetus!”

“I got you, girl, we’re setting up a camping trip to Colorado.”

Camping trip to Colorado by arlingo December 6, 2023

Berwick Camping Trip 

Take a large shit, cover it in pine needles, throw it in the fire, then hollow it out and use it as a fleshlight.

Dude, we should do the Berwick Camping Trip!

Berwick Camping Trip by Van Sully August 21, 2022