As most of you are from the states, you probably don't understand English humour - no fault of your own! I should have thought about this prior to posting.
I will try and explain.
The English are allways making jokes about the Irish and Scottish - as the Irish, especially, are VERY funny people - if you know what i mean
The Irish are reknown for doing some very funny and silly things in England, and i can vouch for that myself as i am both Irish and Scottish - as my Father was Irish (from Norhern Ireland), and my mother Scottish, so i don't stand a chance!!
I have also done some VERY stupid things through life - and i'm known at work as the 'Joker' (somebody who is allways making people laugh and doing funny/stupid things).
Anyway, whenever a joke is told in England, it normally involves the Irish - hence the reason for the 'Irish Dog', it wouldn't have really been that funny (not that you guys from over the pond found it funny anyway) if a 'Welsh Dog' was used. It's known as a very funny joke in England.
Irish jokes arn't intended to be offensive in England, and being Irish i also know a lot of other Irish people, some of who are Irish travellers, and they also enjoy the Irish jokes.
Anyway, hope the above explains it a little better for you all
No, you're the "retarded" one. If you weren't retarded you would have read the post where she explained the joke. ET is short because he has little legs. Not the acronym. So, try and actually read the 2 pages before you try to flame an innocent newbie.
__________________ [SPOILER - highlight to read]: You were adopted.
I won't even attempt to explain this one, but lets see if you can work it out for yourselves?
What do you call a 'Deer' with no eyes? And for those of you that don't know what deers are, they're the animals that pull Sata Clause through the sky on Christmas Eve. Rudolph, hint....hint.