Season 6: Episode 21 - Hopeless

Hopeless: When Barney's father Jerry reaches out to spend time with him, Barney plans a wild night in the city in hopes of finding some connection to his very boring suburban-driving instructor Dad. Barney invites the gang, asking them all to play more exciting versions of themselves in an attempt to impress Jerry. However, after their crazy night of partying ends up with Barney and Jerry being arrested, Jerry admits that he faked being drunk in an attempt to bond with Barney and Barney realizes he may be getting closer with his father after all. Meanwhile, Robin runs into her “crush” whom she met in a department store years ago only to have the moment ruined by Ted who, per Barney's instructions, is pretending to be Robin's boyfriend.