Possible Clues:

• Medical interventions to empty bowels
• Cleansing procedures adopted by hygiene master
• Seamen fashioning pipe-cleaners?
• Drunken seamen forced to clean the bottom
• Certain cleansing measures
• Seen about mother to come from behind with them
• See man (anag) - medical procedures
• At last the same turn to get them into the bottom
• They'll make you get a move on, just the same from the back
• With the same turn-up at the bottom they'll get you in motion