Speech errors

Speech errors are errors when we speak.

Spoonerism refers to exchange of initial consonant btwn words
Examples:
You have hissed all my mystery lectures.
(It should be: You have missed all my history lectures.)
You have tasted the whole worm.
(It should be: You have wasted the whole term.)
The Lord is shoving leopard to his flock.
(It should be: The Lord is loving shepherd to his flock.)

Slips of the tongue
Austrian psychiatrist Sigmund Freud cited two examples of slips of the tongue.
Example 1
A professor in his lecture said, "In the case of female genitals, in spite of many Versuchungen (temptation in German)... I beg your pardon, Versuche (experiment in German)"
Example 2
The president of the Austrian parliament opened a meeting with these words: "Gentlemen, I take notice that a full quorum of members is present and herewith declare the sitting closed."

Dell identified three lvls of slip of the tongue error:
1) Sound errors: Accidental interchanges of sounds btwn words
Example "snow flurries" might become "flow snurries"
2) Morpheme errors: Accidental interchanges of morphemes btwn words
Example "self-destruct instruction" might become "self-instruct destruction'
3) Word errors: Accidental interchanges of words
Example" Wriiting a letter to my mother" might become "Writing a mother to my letter" (funny)