Ah dinnae ken aboot rat,
Translation: I am very sorry, sir, but I do not know anything on the subject.
cos ah'm no very guid wur wurds n rat,
Translation: I have little occasion on which to speak or write anyway.
an ah dinnea ken if ye'd be able tae understaun anyfin rat ah micht rite, you ken n rat n rat...
Translation: I am not so sure that if I were to write anything, that it would be legibe to anyone but myself anyway.
oan ra uther hawn, it micht be no a bad idea... 
translation: I've had a few pints.
:lol: