Top Definition
1) when one is extremely high 24/7

2) when something is challenging or dangerous, but you feel the absolute need to complete/accomplish it despite the risk factors
1) "Daaammmn this fool is tundra smash beyond belief. He likes them glazed eyes fsho."

2) "Did you see Jimmy make the cliff jump? I don't know how shallow this lake is, but this jump is tundra smash man, tundra smash!"
by mist artichokes April 17, 2010
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