Serum Full of Happy Things is a song performed by Unikitty and Puppycorn in “Sparkle Matter Matters”. It is sung while the two put random objects into Dr. Fox’s sparkle matter serum meant for Richard in flashback.
Unikitty: ♪Serum full of happy things, serum full of happy things!♪
Puppycorn: ♪Lots of glue and bubblegum!♪
| Unikitty! Theme
Beautiful Day / Serum Full of Happy Things / I’m Sorry / Snow Day / You Gotta / I Found / Mecha Kitty / We Need Each Other / Waffle Town / I’ve Got a Crush / Nature is the Place for Me / Omletta / Science Must Continue / Happy Just Like Me / Catch The Bad Guys / Logical Space Journey 3000 / Party On Down / Touch The Night / Laundry Day