Thanks for the advice!
Unfortunately, these guys don't work for the same company I do - they work for other companies that occupy the same floor of the building.
I see them in passing, usually in the restroom. One daddy-type guy hauls out a nice, thick, cut piece of meat when he pisses, folding his arms at the same time. It's hard not to stare.
So yeah, I'm not sure how to initiate anything. If nothing happens, I won't be crushed. But it's sure fun cruising...