Every Saturday at 7pm at ColdTowne Theater (4803 Airport Blvd, next to I Luv Video), you can BYOB and laugh your ass off at humor more clever than T&A jokes–but just as laugh-out-loud, get-the-giggles funny. Formed in late-2008 when a stray bolt of sex-lightning struck Austin’s ColdTowne Theater, improv comedy troupe Boy Toy (www.boytoyimprov.com) includes…