the quality and or asset of having a rather large and juicy, quite bubbly and perfect ass-et. So much so that it wanna make a OG wanna cry. or holla. at least thru myspace. Also, "amazing" if it has anything to do with getting booty.
tatis ass is badonkulous. scratch that, her body is badonkulous. then agen, my saturdays with her are badonkulous too.
An ass so big, round and perfect that it's just off the scale, to the point of being ridiculous. And/or any flagrant action performed by somebody in possession of such a badonk, especially when the action features said badonk.
Man did you see that Nicki Minaj new video? Badonkulous!