What is Beer Muscles?
1.
n. false bravado; Dutch courage; the powers one imagines one has after one has consumed 19 pints of beer.
Man1: I'm a gonna go and pick up that incredibly hot girl over there - the one who's sitting with that huge looking footballer.
Man2: Whoa, haven't your beer muscles grown!
2.
When one has consumed too much alcohol and is convinced he can fight any one or lift any heavy object.
Nigga 1:"Tray was trippin last night, man. He drank 3 forty onces and smoked 3 blunts and tried to fight 2 big ass nigga's who been smart eye'in him the whole night!"
Nigga 2:"You right, you right. Nigga had beer muscles! One dem nigga's is a linebacker for Virginia, that nigga was a mob beast niggy for sho'.I'm juz glad Tray pulled a hernia befo' the fight even started so no fight went down. Nigga thought he could pick up a 50 inch plasma and toss it at a nigga like a baseball, he perp."
See
3.
The muscles- or more likely the lack thereof- found in the male abdominal area. This phrase is a tailor-made justification for excessive amber nectar consumption, and places the onus on drinking a six-pack, rather than having one.
'Been to the gym lately?'
'Nah, but I gave the beer muscles a good workout last night.'