Sure, you laugh at him now, but stand-up comedian Larry the Cable Guy is just the sort of dude to someday run for high office. No? Did you think a Kindergarten Cop would become governor? A guy who did a monkey movie would become president? Look, politics only gets weirder as we American humans lose touch with reality, so why not consider the first sleeveless president, bringing his act to the Landmark Theater Sunday, April 29, at 8 p.m. Tickets are $39.75. Visit www.ticketmaster.com or call 262-8100. S