Some of us already do this without any help.
We don’t need a plug-in to make things funnier for us.
Spoonerisms are a real speech impediment, and tend to be inherited.
Yes, I am so afflicted. As was my mom.
Being told that I had to put on socks as a kid because her “freet were feezing” was funny for me, for a while. I don’t think it was ever funny to my mom.