Popeye Stroked His Chicken

Popeye the Sailor Man is someone you know as a man who gets strength from eating spinach. Every time Olive Oyl gets herself in a jam (pretty much every episode), Popeye tears open a can of spinach and saves the day. But there WAS a time when Popeye got strong from stroking a chicken. More importantly though, who are the true parents of that kid Swee’Pea?