an old joke

This reminds me of those old jokes involving waiters and bugs:

Waiter, what's this fly doing in my soup?
Um, looks to me to be backstroke, sir...

Waiter, there's a fly in my soup!
Don't worry, the spider on the breadroll will get it.

Waiter, there's a fly in my soup!
Keep it down or they'll all be wanting one.

I guess I just need to change the word "soup" to "kibble"