"Leggo my eggo" is a former German expression for "Bite me" used in the late 70ies and throughout the 80ies. "Leggo" comes from "Lecken" what "lick" means. "my" is an easy bavarian "mei" ("mein" - in this case "meinen"). "Eggo" equals "Ego" the first person - so "me". Together itรยดs like "Lick myself" (German "Leck mich") or roughly "Bite me".
You lied to me so "leggo my eggo" (Translation from German)
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