I know what song youre talking about, I'm having trouble finding it too. Its not cookie jar by gym class heroes, although thats a good song too. All I know is the song goes "caught you playing in the cookie jar, caught you red handed caught you red handed. Caught you playing in the cookie jar, shame on you shame on you."
What's The Name Of The Song That Goes "Caught You Red Handed, Caught You Red Handed"? It's A Reggae Song. I Think There Is Mention Of A Cookie Jar Somewhere In The Song Too.
Cookie jar by gym class heroes. I don't know if thats what your looking for but thats my best guess