When a gentleman is in a shared ward and has donned a theatre gown in readiness for surgery that afternoon, he should keep his legs together and flat on the bed at all times unless covered by a sheet or blanket.
Otherwise, the innocent and demure wallflower sitting beside her husband across the room may see things that cannot be unseen.
Said gentleman may be thankful that said wallflower keeps her amusement to herself.

Poor bloke.
Really.