cakewalk noun an easy or overwhelming success US,1897 Originally a boxing term for an easy victory, then expanded to general use.
They came out of the chute with fire in their eyes and a tiger in their tank and turned this old-fashioned, gut-bustin’ sidewinder into a cakewalk! — Dan Jenkins, LifeItsOwnself, p. 219, 1984
Solving Iraq will not be easy, and it won’t be quick. This is not a cakewalk. — BaltimoreSun, p. 16A, 21 April 2004