конь не валялся(тж. never do a stroke of work: Ryan is supposed to help me clean out the garage, but he hasn't done a stroke of work since he got here!Taras)
пальцем о палец не ударить(to not do any work at all; тж. never do a stroke of work: Now that Jim's retired, he just spends all day on the couch watching television. He won't do a stroke of work around the house!; I'm going to have a long night ahead with this term paper, as I haven't done a stroke up till nowTaras)