I think you must be using a different version of Spoonerite to me:-

Spoonerite refers to a person who frequently makes spoonerisms -humorous slips of the tongue where the initial sounds or letters of words get swapped.

The term comes from Reverend William Archibald Spooner, a 19th-century Oxford don who became famous (perhaps unfairly) for these mix-ups. Whether or not he actually said all of them, his name stuck.

Example spoonerisms:

“You have hissed all my mystery lectures” instead of “missed all my history lectures”

“A well-boiled icicle” instead of “a well-oiled bicycle”

“Let us pray for our queer old dean” instead of “dear old queen”

So:

Spoonerism = the speech error itself

Spoonerite = someone who makes them (especially often or affectionately)

I now have to look up your version of Spoonerite... Education is fun!