Yep, moms lie. Sometimes to not feel left out, sometimes to avoid judgement. It happens all the time. But it may be her intepretation of the truth. Maybe he started cruising on furniture, that looks like walking...he's just holding onto something. Maybe he really did take a couple of steps or even just one. Usually it takes a while after first steps to really get the walking thing down. I wouldn't worry too much about it.