I'd... draw a man with human arms and hands for legs.
No, seriously - arms work differently from legs in that they're able to bend further and in different ways (mostly because of the shoulders, which work differently than the hip-joints), so whereas legs go straight down from the hips, arms would probably bend out to the sides a little bit. Think bow-legged, only... bow-armed, I guess? They'd have to be strong arms, though, to carry the weight of the entire body.