Summer's here, and heralding our communal urge to start stripping off stifling layers of clothing is the 2013 Hot Undies Run, where the briefs are briefer. Every body type in any attire — or lack thereof — is welcome to join Brian O'Neill's Traditional Irish Pub's two-mile pub trot (with beer) in West University. ''The beauty of this run is that the costumes have as much breadth as Houstonians themselves,'' says Muscular Dystrophy Association's fundraising coordinator, Katy Manning. ''And we've seen it all! Our only rule is: no thongs allowed!'' Costume contest winners last year were a group of men (un)dressed like Magic Mike characters, with others attired as runaway brides, superheroes, cheetahs ''and two girls in black tube tops that mimicked censor bars,'' Manning adds.