One who is working their way up through the beer drinking ranks, usually starting off with cheap, shitty light beer and progresssing to stronger, more full bodied fare.
A person who enjoys drinking beer but can only handle a few before slurring, vomiting, and pissing on themselves.
A pro beer drinker who has a half boner(semi)
#1. I remember when Karl had his first beer; he could barely hold down a Miller Lite. Now he pounds Heineken like it's water. He's ready to step up to the pros and have a Guiness with Rick.
#2. Danko, the quentessential semi pro beer drinker, had two beers, then his pants fell down and everyone saw his Blue Moon.
#3. CR had a partial rod from staring at all the prime booty while he slammed a few Modelos.