Porto Alegre's steamy alleys echo with the sounds of hungry, anonymous sex. Two strangers, eyes locked, pull each other into a dimly lit doorway, their breaths already ragged with anticipation. The taller of the two pushes his partner roughly against the wall, his hands groping eagerly at the other's crotch. In one swift motion, he drops to his knees, freeing the other's aching cock from its constraints. He dives in, taking the length deep into his throat, his nose buried in the coarse pubic hair. The recipient gasps, his hands fisting in the other's hair, urging him on. The giver's head bobs furiously, his lips stretched wide, taking every inch, his own cock straining painfully against his jeans.