Spring is trying to wiggle its way out of winter's final clutches, which means it's time to get excited about the F.A.T. Friday Trolley Hop again. The event, which takes place the final Friday of every month, just isn't the same when it's cold outside. Free trolleys take revelers up and down Frankfort, Mellwood and Story avenues from 6 p.m. to 10 p.m. Almost forgot: Oftentimes, free booze is in abundant supply.