Also it should be specified that these are straight men who never entertain wistful thoughts of another man's cock. Muscular, well-endowed straight men, whose rock-like chests glisten with fragile beads of moisture as they shower together before towelling each other off and pulling on their tight, white, form-hugging space underwear under their spacesuits, but who are not thereby aroused. This should be spelled out explicitly, to avoid any confusion.