Billy Corgan: Hey, Homer, looks like our next stop is your hometown, Springfield.
D'Arcy: Is it true that we have to bring our own water?
Homer: We got a little rule back home: if it's brown, drink it down; if it's black, send it back.
When finding oneself in an embarrasing situation one then grabs their drink (preferably alcoholic) and exclaims "Drink it Down Drink it Down" and then procedes to down their drink. By the time the drink is finished the embarrassing situation has passed and everyone is happy.
El(saying really loudly):"Hey Aoife isn't that that Bill lad that you said was crap in bed?!"