It comes as some surprise that an increasing number of just-turned-bar-legal adults are turning to night-time cycling rather than partying. You can see them, thrift-store-outfitted, cruising the Montrose in intimate packs, looking like defiant, asexual Morrisseys on sparkly retro two-wheelers. Riders usually alert folks of their intentions on public Internet message boards, like www.handsuphouston.com. And after stocking a portable CD/MP3 player with Belle & Sebastian songs, they meet at the arranged supermarket parking lot and proceed to get their ride on. It's unknown what happens afterward. For the sake of youth, it better be a drunken orgy.