macca means enormous, huge. From massive, mega. cowboy...

I thought Macca was a McDonalds hamburger.

A macca is also slang for a big mac from McDonald's.

yes, all the sites provide the definition but people provide me with other definitions and some people know nothing about some slangs they know about them from my questions SO my questions are very useful. anyway thanks for posting your comment

http://www.urbandictionary.com/define.php?term=macca 1. Macca A person possessing extremely large sex appeal in spite of being a care bear. Possibly the most gorgeous and sexy and cute thing ever invented, better than The Beatles and Darius put together. Also has good taste in music and smells nice. "I want Macca to eat my last rolo because he's sooo very sexiful" by caroline Jun 11, 2004 share this 2. macca Former-Beatle Paul McCartney. Used wildly & affectionately by the music press throughout his solo career. "have you heard the latest musical offering from Macca?" "yeah its shit."