1. A pastry baked inside a pyrex dish, then filled with either custard or jam.

2. Life's little victories.
1. I baked a pyrex pie today in the oven.
2. Remember to enjoy life's pyrex pies.
by Mr. Morimoto January 23, 2010
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The result of defecating into a glass pie plate for sexual enjoyment. The non-excreting partner positions herself/himself underneath the plate for visual stimulation.
Jane's particular kink was to introduce the pyrex dirt pie to her adventurous partners.
by Loudthing April 16, 2009
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