Bundle Of Laughs Meaning

(idiomatic) Something or someone very funny or fun.

Example: 1982, New York Magazine 11 Jan 1982
  When she was alone with you, she could be a bundle of laughs. But if we were going to a large party, Sunny would break out in welts from nerves.
1991, Third Way Dec 1991 - Jan 1992 - Page 20
  Grim and gloomy Protestantism has never been exactly a bundle of laughs but lately humour in the church, particularly the evangelical wing, seems to be undergoing a revival.
2006, Chris Jones, Genevieve Jolliffe, The guerilla film makers handbook
  Eddie Murphy once said he's worked on films where it has been a bundle of laughs, and other times it has been absolute hell, and you can not tell whether the film will be any good, or terrible based on the experience.