Consisting of うかうか + 三十 + きょろきょろ + 四十. Literally “muddle along at age of thirty, (then) restless at forty.”
Proverb
うかうか三|さん十|じゅうきょろきょろ四|し十|じゅう
romaji ++|(ukauka sanjū kyorokyoro shijū) ++
(idiomatic) living a life without achieving anything great
Synonym: 光陰矢の如し