Amateur Transplants

While sat at my computer, I accidently spilt a pint of 'eer
Now my key'oard isn't working properly

'Ecause I spilt the 'eer on it, I think that I have 'roken it
I've really 'uggered up the letter ....

Letter (B) Letter (B) Letter (B) Letter (B)
I've really 'uggered up the letter (B)