Cornerside Gym

At the downtown gym, the group showers were small and cramped, with a central pillar spraying in every direction at once. The water was always a little colder than Carl liked, and the shower was lined with chipped cement and graffitied walls.
But the men…
That was where the young guys in the Riverside District worked out — they were young, mainly factory workers or dockworkers. Muscles, jaws, shoulders you just wanted to suck on like nipples. Carl had a big hardon whenever he was here — Carl wasn’t very good with women, but he got stiffies easily around men. He had to hide it at the gym, so he wore big billowy trackpants.
The other men at the Cornerside Gym wore shorts, mostly, except for a few who must have been making weight by working out in sweatpants and sweatshirts. Even they turned Carl on, their muscles bulging, roundly, asses prortruding like shelves against the fabric of their sweatpants.

From Mr. Taggart the Burly White Daddy