If I knew you were coming, I'd have baked a cake exclamation
Used to show one's excitement or delighted surprise when he or she has seen someone unexpectedly
Oh my gosh, I can't believe I would meet you here. If I knew you were coming, I'd have baked a cake!
The excitement and danger caused by taking part in activities, especially sports or entertainments
This expression is the title of a popular song published in 1950. The best-known version of the song was recorded by Eileen Barton. The phrase quickly caught on, and for at least a decade thereafter anyone who appeared where least expected was likely to be greeted with “If I knew you were coming, I'd have baked a cake.”