Mac + Master = Macster.
A mac, being a person that is good with women (macin on chicks), and a master is the best at something, we get Macster.
This word can also describe a guru of the Apple computers (for nerds)
Ryan: "Dude, Jon is such a Macster, he's practically putting us all on cold streaks"
nerd: "I need help loading Safari... where's the Macster when you need him!!!?"