"eejit" is fairly good natured..... not as strong as "idiot"... like telling someone they are "daft"....I tell the Ozzies its a "Belfast term of endearment"- as in "yer an aul' eejit!"....
nowhere near as strong as some of the others suggested above.....
Noreen my Granda used to call us it too (mind you he called us "faggots" too *grin*)........
slainte
alison