A retarded sniggle; conjures images of a mentally disabled squirtle
Person 1: "Look at that stupid squirtle, it keeps running into walls"
Person 2: "Yeah, what a retardle"
George: "What a dumbass"
Matt: "You mean, what a retardle?"
someone who reuses the same terrible comebacks constantly and is kind of gay anyway.
god, that kid just keeps calling me a douche. what a retardle.