1. An enormous, dense, tightly packed mass of poop capable of achieving mass destruction by means of toppling trees, buildings, and the American dream.
2. Big/big round poop.
1. Today at work I sit down, then I dropped a butt boulder in the trash can.
2. This is a heavy butt boulder, daddy, what did you eat?
3. Would someone please tell me what "butt boulder" means?
4. Do me in the butt, then eat my butt boulder.
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