Season 5, Episode 18: "The Raincoats"

Hey, I gotta stop at the bookstore, to get my parents one of those

French-English dictionaries.

Hey, hey, hey, hey, hey, hey.

Your parents are going to Paris, right?

So, I tell Alec

that I have to go to Paris

for an undetermined amount of time.

Then all I have to do is buy some postcards