See, now you get to take credit for the surprise without actually having to work. WIN-WIN, DUDE! 
Bwa-hahahahah! I didn’t consider that angle. True, true!
When I was in my early twenties my long distance girl friend turned up as I was going out the door with my short distance girl friend. Big surprise.
Don’t do it.
Apparently it’s not recommended to fly with a cast - said the pediatrician to my daughter yesterday.
So, in the future, say you broke something and now you can’t fly.
It is, OTOH, perfectly acceptable to cast with a fly.
As long as the guy agrees.
How is this not going to end with an episode of “Oooh, what did you break? Let’s have a look!” followed by immediate and terminal awkwardness?
So what you’re saying is that when you cast a fly during a fly cast, the cast fly flies?