One fine day there were three Irishmen who were 'shooting up' on heroine, using a needle. The first one passed the needle onto the second one, but he was smart and thought 'Au no, I'm not goin' to take your needle 'cause I might catch AIDS!"
Anyway the needle was passed onto the third Irishmen, who accepted it. The second Irishman looked at him and said, "You sure you want to take this 'ere needle?"
"Au, it's all right," replied the third druggie, "I'm safe 'cause I'm wearing a condom!"