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After having dined at Grandma's Kitchen an involuntary purge of the lower intestines resulting in a contained explosion within your pants. Once in bathroom, the removal of your pants causes the feces to spill over the front of the porcelain throne creating a mud mound on the floor and leaving the door open for all to see!
I hate my in-laws so much I created a Grandma's Mud Castle for them!
by Ga-Law August 03, 2013
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