Ripple Knock Knock Doctor Who Shirt Size:3XL The girls of Pi-Delta-Pi were

The girls of Pi-Delta-Pi were in for the surprise of their lives when the nerds decided to attack

It has Robin's trademark R on the front and his cape is printed on the back

it made stars of Ted Danson

This shirt features the film logo and jack-o-lantern/human skull hybrid which graced the original movie poster

and painting the house

Ripple Knock Knock Doctor Who Shirt Size:3XL The girls of Pi-Delta-Pi wereThis Doctor Who shirt illustrates a knock knock joke that takes place at the door of the good Doctor's TARDIS. Even though this is an amusing joke on its own, you might need a Type 40, Mark 1 TARDIS for a humorous visual. If you are a fan of Doctor Who, this is the perfect shirt for you. You'll have others laughing harder at this shirt than at some of the Doctor's whimsical comments.