If you're curious -- That's "Dumb Bunny." She was a member of a team of inept super-heroes called the Inferior Five, who had their own comic book for a while back in the 1960's. She was very strong and very, uh, blonde -- not a very PC concept, but this was the Silver Age!
Can anyone (besides Lfan) identify the inspiration for the gag?
In case anyone's curious -- One of my favorite "Far Side" cartoons shows a pudgy, bespectacled kid pushing determinedly at the front door of a "School for the Gifted." A large sign on the door says "PULL." It makes me laugh every time I think of it -- which is whenever I do the same thing myself!
It came to mind when I was trying to come up with a gag for a Dumb Bunny commission.
I loved "The Far Side." That, and "Calvin and Hobbes."