Top definition
combination of badonkadonk and redonkulous,
noun:an ass so big its amazing it doesn't have its own gravitational pull
adj:to be crazy to the point that its annoying, or something so ridiculous
boy 1: man look at thunder thighs over ther
boy 2: you think thats big than look at her radonkadonk
boy 1: i am so bored, where is phipps
boy 2: this whole situation is radonkadonk
boy 1: john shut up
by Coolfool October 21, 2007
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