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This term refers to being on your best behavior when doing bad ass masculine shit like climbing rugged peaks so people put up with you and don't push you off a cliff.
There are many unspoken rules of good Expedition Behavior such as:
Don't fart in the tent.
Try to retain some hygiene- other people have to look at and smell you.
Don't be a lazy ass- carry your own weight.
Don't be cocky.
Joe was not on his best Expedition Behavior. He chewed his ramen with his fucking mouth open, smelled like a rotten llama, and bitched about his hangnail while we were summiting the north face of K2. Therefore Joe is no longer with us- he never made it down the mountain and there were no witnesses.
by fuzzywuzzy242 November 12, 2010
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