Quote from Barney in Ring Up
Carly: Hey, Barn. Ted? Ted: Barney, what is your sister doing here? Barney: Nothing, bro. Or should I say, bro-in-law! [claps] [A crew of staff quickly set up Barney's apartment for a wedding] Barney: Congratulations! You're marrying my sister! And you spared no expense, you big crazy!