Step one: Take one IKEA "Mammut" plastic chair. Remove the legs, usually by sitting on them while the chair lies on its back or side. Remove the plastic base of each leg, usually by whacking it on the floor a few times.
Step three: Your mother tells you that the phrase is actually "peg leg", and pirates only have one at a time, otherwise they can't stand up.
Step four: Ignore your mother. She has no idea anyway.