Really Really Happy is the fifth album by the American pop punk band the Muffs, released in August 2004.

A remastered 2-disc Deluxe version, which included six bonus tracks and a 16-track set of demos, was released on May 13, 2022.

All tracks are written by Kim Shattuck[2]Contents of the Deluxe Edition bonus disc were previously released separately on vinyl only for Record Store Day in April 2022.

The band's musical credits are described in the album's liner notes:[2] Ronnie Barnett is given additional credit for toy piano, and session musician Brian Kehew plays organ on "My Lucky Day".

Background vocals are credited to Kevin Sutherland and Greg Saunders on "Don't Pick On Me", and to Kristen Shattuck on "My Lucky Day" and "Oh Poor You".