A line similar to "this is what you get when you mess with us" can be seen at the bottom of this page of radiohead.com from the OK Computer period:
food and sex dont go
wilting before my eyes
they will peck out your eyes
mathematics aerodynamics
he blubbered under the bubbles of his overflowing mud bath
now seems like a good time to ask for your hand
just killing time before the inevitable
a lottery winner
the life line
a wee artery
with a few veins
hardly any
capillaries
but the possibility of babies
as blindfold referees
this is what you get when you fuck with me
wilting before my eyes
they will peck out your eyes
mathematics aerodynamics
he blubbered under the bubbles of his overflowing mud bath
now seems like a good time to ask for your hand
just killing time before the inevitable
a lottery winner
the life line
a wee artery
with a few veins
hardly any
capillaries
but the possibility of babies
as blindfold referees
this is what you get when you fuck with me
It was a favourite saying of the band that whenever they heard about someone behaving offensively, they'd say 'The Karma Police will catch up with them eventually'. So they wrote this song. A "stupid song" in strict 4/4 time, with it's sudden change halfway through and the sound of the dying computer taking over the whole song.
The band tried out the song prior to recording it when they toured in support of Alanis Morissette in 1996. Those performances differ considerably from the finished arrangement. The lyrics in the first verse are different, Thom sings the choruses in a higher octave, Ed sings along in the final section, the instrumental passages between the sung phrases at the end are twice as long and the performance ends abruptly.
This recording comes from august 14th 1996:
This recording comes from august 14th 1996:
she stares at me as if she own's the world
and we have crashed her party
Another performance, from August 19th 1996, features different early lyrics. The line "he smells of air conditioning" seems to be borrowed from 'Lift', and connects the two songs loosely:
he talks in maths, he buzzes like a fridge
he smells of air conditioning
karma police, arrest this girl
she talks at me as if she own's the world
and we have crashed her party
Two session tracks, called 'Karma Police in Space Echo' and 'Karma Police voice through telephone, were released in 2017 on the cassette that was part of the OKNOTOK 20th anniversary release of OK Computer:
This page, titled 'stuck in a frozen lake', appeared on radiohead.com during the recording of OK Computer and features a text by Thom with notes about songs that were around then.
The relevant section was not highlighted in red letters in the original page:
The relevant section was not highlighted in red letters in the original page:

(information incomplete)
....>>>>i like the idea of you listening to our recordings with your head resting gently in emptiness. or before going out. or when you've come back. i dont like the scientists breaking down its molecular structure and teaching it in O level chemistry i ont want to have expain it but it worries me stupid. there is a lot of crying goes into making things.<<<<.... the masters tell us that there is an aspect of our minds that is its fundamental basis, a state called "the ground of the ordinary mind." It functions like a storehouse, in which the imprints of past actions caused by our negative emotions are all store like seeds. when the right conditions arise, they germinate and manifest as circumstances and situations in our lives. if we have a habit of thinking in a particular pattern, positive or negative, then these tendencies will be triggered and provoked very easily and recurr and go on recurring. With constant repetition our inclinations and habits become steadily more entr ched and continue, increasing and gathering power even when we sleep. This is how they come to determine our life, our death our rebirth.
Originally recorded with Jonny on piano, all the live versions since it's release on OK Computer have been played with Rhodes piano instead.