Possible Clues:

• No longer needing Huggies (2 words)
• Oddball gets qualified to be in control of waste elimination
• At an early stage continent's bananas went by rail
• No longer needing diapers (2 words)
• What implies trade, in going properly?
• Having done exercises that drive you mad, get to go to bathroom by yourself
• (Of small children) no longer dependent on nappies
• Weaned off nappies