A few Sundays ago, training with a mate, gym had emptied, bar us two, 20 mins before closing.
Straight away got the phone out, took off top and took pics. Total homo (no homo).
Empty gym is like an invitation to take the piss for me. It's like being in a supermarket on your own. You'd take the piss and eat stuff, sprint up and down aisles, throw shit, put glass bottles in freezers.