Straight from Wikipedia, "Badonkadonk is a slang term for a woman's buttocks that are voluptuously large yet firm..." Per Tracy Morgan, "One cheek goes up, badonkadonk; the other goes down, badonkadonk." See also Ass, Body.
The lack of articulation between some individual's calves and ankles. See also Body, Portmanteau.
I'm not really sure whether this should fall under euphamisms or if we should create a new category ("injuries"), but this is my favorite phrase for a perpetually injured appendage. See also Body.