Who’d think of looking for a breath of fresh air under the BQE? But R Bar a dark, casual pub is exactly that, winning points for eschewing the too-cool-for-school attitude of neighboring hangouts. The place is probably best known for Mikey’s Big Gay Pajama Party on Tuesday nights, when pajama-clad drinkers get one on the house. There are plenty of other nights to choose from, all without a cover charge. At any of them, you’ll feel like a regular after your first round.