26 hours later... Lily, Marshall, Ted and Barney are at the bar and the table is filled with food. Flashback
Marshall: I quit! I'll take one. Marshall: Robin, do not smoke this cigarette. Wake up!
Plan: A: Marshall; Q: Who is the first to start smoking again after quitting cold turkey? A: Lily; Q: Who is the first to start smoking again after Marshall? A: Barney; Q: Who is the last person to quit smoking? Summary: After quitting cold turkey , Marshall takes up smoking again, with Lily, Ted, Robin and Barney not far behind.