1 definition by x_X_CerealKiller69_X_x

Top Definition
When a person is so fat he or she has six stacks of fat or six layers of fat stacked. The opposite of six pack abs.
- David eats so much he has a six stack.

- Dude you're growing a six stack.
by x_X_CerealKiller69_X_x June 18, 2011

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