Official Mrs Brown's Boys Happy Birthday Dad Card Mrs Brown's Boys has proved a worldwide smash and only goes to show when the times get tough, the tough get laughing.Â This is a certainty with the Mrs Brown character played by Brendan O'Carroll. The message on the cards says "Let yourself go DAD oh go on, it is your birthday... I remember the last time you let yourself go, you cleared the feckin' room! Happy Birthday."Â Not forgetting lots of space to write your own personal message. Order now for Delivery and same day dispatch when you order before 2pm Monday to Friday. Â Worldwide delivery also available.