Possible Clues:

• One's probably forgotten when this is voiced
• The whatsit was watery and sticky
• Doohickey
• So-and-so's pasty, initially short on filling?
• Spare toothless whatsit!
• Skinny and toothless what's-its-name
• Oojamaflip
• Emaciated toothless person whose name I can't recall
• Whatshisname a beanpole, struggling to chew?
• Spare a couple of months during stay for whatshisname