The phrase "cartoon theme" refers to the music or melody that plays during a cartoon or animated show. It helps set the tone and mood for the story and is often catchy and recognizable. Full definition
He can be found in the kitchen making lunch and mindlessly singing cartoon theme songs, or on his blog where he shares stories about the struggles and triumphs of raising twins. (twiniversity.com)
Some of the popular brands are Delta Enterprise, which distributes toddler beddings with cartoon themes such as Spongebob Squarepants, Dora the Explorer, and Cars. (pregnancy-info.net)
or funny («I frequently get 80s cartoon theme songs stuck in my head and have been known to be caught humming Mighty Mouse's song in business meetings.»). (datingsitesreviews.com)