Beta blocker: blocks both beta-1 & 2 receptors [Stepping on beta portion of adrenergic clover]
Choice drug for ventricular tachyarrhythmias [Holds back running heart with red, active ventricles]
Also blocks outward repolarization potassium current, resulting in prolongation of QT interval [pot of ass bounces and cannot leave the region, the impact of the bounce prolongs QT]