Editors have no sense of humor

My work is having a talent show. I won't be performing, since I'm talentless. But that's not the point. To drum up enthusiasm for the show, they've posted posters all around the office. The posters are pretty interesting--they show a picture of one of the talented individuals alongside a famous person who shares the same last name. The tagline of the poster plays off the last name thingy, like "Guess which X has more talent." You get the idea.

Now on to the meat of this post. So there is a woman at the office with last name Gillespie. Naturally they paired her with Dizzy. The tagline reads:

Guess which Gillespie should toot her own horn.

Of course some pedantic editor got to it and ruined the joke. It SHOULD read

Guess which Gillespie should toot their own horn.