people of all shapes , sizes , religions , ethnicities walking , milling mindlessly , standing undecided , lounging , smoking , getting on and off conveyances , talking to one another , ignoring one another , plugged into ipods , shopping , eating on the run , kissing , cuddling , exchanging bitter words , oblivious , cell phones slapped to their ears , accessing e-mail or porno , slouched , hunched , drunk , stoned , fights breaking out , first-date embarrassments , skulking , mumbling to themselves .