Possible Clues:

• Full of gunk
• Cheap 24
• Greek's relaxed and well-lubricated
• Ingratiating when interrupting 19th century PM
• ... when in colourless type of cafe
• Without much difficulty, following a great little fatty
• No trouble getting to the end of anything so fat
• Like the pole that is hard to climb
• Like some hair, dull, without a shine at first
• Oily in manner, covered with lubricant