What is Gamma Delta Iota?
1.
A fictitious greek name referring to students that are not part of any greek organization. It stands for "GDI", or "God Damn Independant"
"I got a custom greek sweatshirt with the letter Gamma Delta Iota becasue I feel like being a smartass."
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When having sex with a woman doggy style, the man inserts his thumb into the anus of the woman while making a sound like a screeching ea..