Top definition
Composed of the root words rambunctious and steroids

Rambunctoids are the ridiculous, illegal steroids that cause crazy side effects like male shrinkage of the penis and are much different than regular protein and nutrition supplements.
(Douchebag #1) So I woke up this morning and my urethra looks very much like a down syndrome patient's face.

(Douche bag #2) Dude, lay off the rambunctoids.

by Cap'n Sea-Biscuit Crunch April 04, 2009
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