tap jockey

One who works in a bar or pub serving tasty beverages. In Ireland, a tap jockey is usually considered to hold a position of power and prestige, as it is s/he who regulates the supply of alcohol. Tap jockeys generally have little problem finding a roide.

"Jayz Mary, who's yer man behind the bar?"
"That's the new tap jockey - can't pour a Guinness to save his life, god bless us".