Lewis Carroll, author of Alice in Wonderland is considered the patron saint of pedofiles. Alice Liddle was the little girl who they believe was abused by him, thus, where the term comes from.
I believe Trump called Marco Rubio, Adam Schiff, and one other senator liddle with a D.
I know Trump called Schiff liddle. Don’t know about the others. “Foam Boi” Rubio.