means to be hitting on the ladies

To succeed with talking/flirting with the opposite gender (typically males to females). Often occurs at various social gatherings such as parties, hoedowns, conventions, sporting events, or fundraisers.

To get fucked up beyond all belief; to take multiple jaeger bombs followed by a few beer fights and make out with some chick behind a dumpster.

(verb) to flirt with or attempt to seduce

1. To hit on a girl
2. To eat food intensely

To hit on, flirt with, or seduce another by using verbal or sometimes physical means of persuasion.

mack" may derive from french slang where a pimp is known as a "mac" short for maquereau, or mackerel. Commonly, a mack is a pimp