United StatesUnited KingdomGeneral Englishinformalhumorousslang
A joking term for the temporary or superficial appearance of arm muscularity produced when holding a drink such as a beer, implying the apparent strength is not genuine.
2.
United StatesUnited KingdomGeneral Englishinformalpejorativeslang
A derisive phrase for a physique shaped by frequent beer drinking—often suggesting flabbiness, a beer belly, or lack of true fitness rather than real muscular development.
Examples:
EN: Look who's got beer muscles all of a sudden.
ES: Mira quién se pone fortachón con la cerveza.
EN: Look who's got beer muscles all of a sudden. No, I'm serious.