The rash-like sensation felt in the palm of the hand after unscrewing many twist-off beer caps. Most sorely felt in conjunction with the hangover that inevitably accompanies a beer palm.
"Man, I just high fived Jeffery. He's a nice guy but my beer palm is stinging like a son of a bitch."
"Christ work was shit today. I swear I can't tell if I'm getting RSI or if it's just beer palm from last night."