Well, Jo. Two votes for "Sudden Withdrawl" being at least part of what you're looking for.
KatieG. "Sudden Withdrawl" Isn't it also when Dee Dee had to cancel her fishing trip and Rick and Charlie question her about it? I like that scene. There were some really cute scenes in that ep. The bank..poke in the ribs...tickling, that's a favorite.
The other one you mentioned..Australia, would that be "Down Under"? I remember that one being the one with the female bartender that reminds Rick of Dee Dee.