Arthurhas long been a cornerstone of PBS lineup of educational childrens shows.

The episode saw the titular aardvark and his friends attending the wedding of their teacher, Mr. Ratburn.

They assume hes marrying Patty, a female rat (voiced byJane Lynch!

Arthur (screen grab) Mr. Ratburn (right) CR: PBS Kids

Credit: PBS Kids

), until the groom enters, accompanied by… another groom.

(Patty, it transpires, is his sister.)

Yep, Mr. Ratburn is gay!

Still, itsrefreshingto see a childrens show depicting LGBTQ characters in such a casual way.

The kids dont even comment on it; they simply smile to one another.

Predictably, many Twitter users were enthused about this development.