barrel of fun

plural barrels of fun

1. oftensarcasticA great amount of fun or enjoyment, or something or someone that provides this.

   We all went out to a karaoke bar and had a barrel of fun.

   2 more examples

   Two hours of root canal surgery – that sounds like a barrel of fun.

   1939, Lew Brown and Wladimir Timm (English lyrics), "Beer Barrel Polka", aka "Roll out the barrel" ♫ Roll out the barrel, we'll have a barrel of fun Roll out the barrel, we've got the blues on the run