Who knows the punch line of these two English jokes?

The punch line of the first joke is ambiguity. You spelled it wrong, not on, but one. A said that his father could lift a pig with one hand, and B was "a pig with one hand". He said, where did you get the pig with one hand?

The second joke is also ambiguous. The guest asked the barber, have you ever shaved a man with wooden legs? The barber understood it as "shaving with wooden legs", so he replied: no, I usually use a razor.