Possible Clues:

• Treated with a slippery or viscous liquid
• Pirouetting priest in party is slippery
• Attention-seeker was in front, running well after taking fluid
• Dirty, having cap removed and treated with grease
• Drunk (slang)
• Like many baking sheets before baking
• Noisy no more, maybe
• No longer squeaky (one hopes!)
• Like a well-___ machine
• Dealt with squeaking