The Channel 5 News presenter was hit by a car but received no serious injuries.
The BBC Breakfast host traced back the original red sofa to the home of Miss Great Britain Debbie Greenwood, who left the show in 1986.
Superstition says being stuck by falling bird poo is good luck.
Kay replaced Dan Walker who has moved on to Channel 5.
The morning news host was not on the BBC Breakfast sofa on Monday.